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Zero Tolerance 0452CF; Pocket Knife with 4.1” Dual-Finished S35VN Steel Blade, Carbon Fiber Front and Titanium Back Handle Scales, KVT Ball-Bearing Opening, Frame Lock, Deep-Carry Pocketclip; 4.6 OZ.,Large

4.7 4.7 out of 5 stars 443 ratings

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Pocket Knife

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About this item

  • 4.1-inch S35VN steel blade shows amazing toughness and resistance to edge chipping, with improved edge retention
  • Handle features carbon fiber front and titanium stonewashed back for comfortable in-hand feel, increased strength and excellent size/weight proportion
  • Handsome, dual blade finish with a non-reflective satin finish on the grind and stonewashed finish on the flats and blade thickness is 0.156 inches
  • Great companion for hunters, business professionals, wilderness guides, survival experts, first responders, military, law-enforcement and more
  • Ideal gift for any special occasion such as birthdays, holidays, graduations, anniversaries, promotions, weddings and more

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From the manufacturer

Zero Tolerance

A cut above the rest

From fierce combat knives to lightweight EDCs, Zero Tolerance consistently dedicates the iconic brand to offering premium-quality, professional, hard-use knives consumers can depend on. Zero Tolerance knives are manufactured with premium blade steels, high quality handle materials, and dependable locking and opening systems.

Zero Tolerance

Zero Tolerance Sinkevich Knives

Custom knife and toolmaker, Dmitry Sinkevich, has collaborated with Kershaw and Zero Tolerance to achieve some of the most elegant, everyday carry folding pocket knives designed with clean lines, sleek looks and solid ergonomics. With practical design and enhanced detailing, Sinkevich’s characteristic clean and practical design is adorned by knife lovers everywhere.

Sinkevich Features

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locking system, knife locking, locking knives, kershaw locking, secure locking, pocketknife lock

Attractive Blade Finish

When a knife design requires a lighter blade to highlight the steel, Kershaw often applies a satin finish. Satin finishes, whether machine-generated or otherwise, leave faint patterns of lines on the steel, and while they sand away the steel’s brightness, they do not remove it as completely as do other finishes. A satin finish also helps reduce evidence of stains and scratches on the blade. Depending on the knife’s design, Kershaw’s non-reflective stonewashed finish may be either pronounced or subtle, but in both cases, it transforms the blade by creating a fade-resistant, scuffed look that hides smudges and fingerprints. A stonewashed finish, achieved by tumbling a blade with ceramic stones, enhances a blade’s rugged appearance as well as its indestructibility during field use.

Fast Deployment

Using 'caged' ball bearings for smooth blade deployment and overcoming stronger knife detent, the KVT Ball-Bearing Opening System makes one-handed knife opening fast and easy without the need of a mechanical assist. Ball-bearings surround and freely rotate around the pivot. When the user pulls back on the flipper, the blade rotates out of the handle as the ball bearings roll into place.

Secure Locking System

Kershaw’s frame lock design makes knives safer, securer, sturdier and quicker for one-handed blade deployment. The knife handle, or frame, has two metal plates on either side of the blade, and when open, the lockbar butts up against the blade’s backend to prevent blade closure. To close the knife blade, push the frame to the side to unlock the blade and fold the blade back into the handle.

Additional Features

knife flipper, flip open, flip open knifes, switchblade knives, assisted opening knives, switchblade

durable handles, knife handles, handle features, knife handle types, pocketknife handle

knife pocketclips, kershaw pocketclip, pocketknife pocketclip, knife clips, pocketclip

One-Handed Flipper

Flippers on manual-open knives require user to push with quick strength until blade deploys. Some manual flippers disappear when blade deploys, others become a finger guard. Manual flippers appeal to inexperienced users as well as experienced users who prefer a classic, old-style opening. In both cases, ambidextrous flipper works as index finger applies pressure while closed knife sits in palm.

Durable Handle

A reinforced polymer of thin strands of carbon tightly woven, carbon fiber is tremendously strong yet lightweight. Strong weaves of bonded carbon atoms are used to compose carbon fiber in both Kershaw high-end knife handles and Zero Tolerance premium materials. With solid strength, wear resistance and corrosion resistance, carbon fiber is an excellent, high-performing, high-quality knife handle. Titanium is a lightweight metal alloy and it offers excellent corrosion resistance. Heavier than aluminum but still lightweight and strong, titanium is a very sturdy material often used in knife handles, locking liners, or as a blade coating to enhance performance. Titanium is a sleek, stylish, premium material that’s excellent for the ideal everyday carry.

Convenient Pocketclip

Kershaw designs pocketclips to fit specific knives according to their weight, intended end use, size, style and hardware. Some knives have multiple carry options, others are more streamlined. A pocketclip with tip-up carry is positioned so the closed knife carries in the pocket with the tip of its blade pointed upwards. A reversible tip-up or tip-down pocketclip allows user to change tip position.

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Zero Tolerance 0452CF; Pocket Knife with 4.1” Dual-Finished S35VN Steel Blade, Carbon Fiber Front and Titanium Back Handle Scales, KVT Ball-Bearing Opening, Frame Lock, Deep-Carry Pocketclip; 4.6 OZ.,Large


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Customer reviews

4.7 out of 5 stars
4.7 out of 5
443 global ratings

Customers say

Customers like the quality, appearance and size of the knife. For example, they say it's well made, has great steel and it looks and feels great. Some appreciate the size and weight, saying it'll accommodate small to large hands. As for the sharpness, and value, they're happy with that. That said, some disagree on ease of opening and lock.

AI-generated from the text of customer reviews

123 customers mention118 positive5 negative

Customers are satisfied with the quality of the knife. They mention that it is a well-made production knife, with great steel. The craftsmanship is beautiful, and the knife feels very solid. The materials used are the best of breed, and it comes razor sharp. The ergonomics are top notch, and is well-balanced.

"...Is it worth the money? I have no idea, probably not, but the quality is much higher than all of the $130-$150 knives i own so i guess you do get..." Read more

"...This knife is equal parts tough, robust build, tight tolerances, high grade materials, and superior design...." Read more

"...Flipper mechanism is perfect. Quick, fluid, and rock solid lock up. Jimping on thumb rest and flipper are grippy but not excessively rough...." Read more

"...Once I move my fingers off the lock and onto the back scale it opens really fast...." Read more

55 customers mention52 positive3 negative

Customers are satisfied with the appearance of the knife. They say it has a beautiful design, the finish on the blade and titanium is beautiful, and the materials, fit, and finish are all very nice. Overall, customers say that the knife looks and feels great, and is a great addition to any collection. Customers also mention that the handle shape is very nicely shaped and feels natural in the hand in both grips.

"...The looks are amazing. I absolutely love the design.-..." Read more

"...The blade is beautifully sculpted, two tone, flat ground, and came as sharp as any knife I've ever bought...." Read more

"...carbon fibre presentation scale, and titanium liner lock is a well-designed, well-executed, Med-Lg. pocket folder...." Read more

"...I don't mind having to finish the edge a little. The shape of the handle is perfect, making it very easy to hold onto and not slip...." Read more

48 customers mention42 positive6 negative

Customers like the size of the knife. They say it's not too small or too big, and should accommodate small to large hands. They also say it carries much smaller than its specs and is a great, large EDC blade. Customers also mention that the blade is of a size you could use in self defense if needed. They appreciate the excellent fit and finish.

"...The quality is superb. I mean really superb. The fit and finish is fantastic.- The deployment (after about 200+ flips) is incredible...." Read more

"...It carries much smaller than its specs and is a great, large edc blade if you're confident with a large blade. Buy with confidence...." Read more

"...Now about the knife. This model is amazing. It's rather big like a mini pocket sword!..." Read more

"...It's slim shape and light weight make this all but disappear while in my pocket and the size of the knife helps to provide a nice amount of grip..." Read more

37 customers mention37 positive0 negative

Customers are satisfied with the weight of the knife. They mention that it's extremely light, big but light, and slim. They also say that the blade length and weight are similar to the Spyderco military. The fibre scale, bolsters, and titanium liner-lock keep the weight low.

"...Supper easy to carry.- Yes it can be an EDC knife even though it's over 5" long! It's not uncomfortable in your pocket.-..." Read more

"...10/2016 Update: I still love the size, the weight, the materials, the asthetics, but there's one gripe...." Read more

"...Carbon fibre scale, bolsters, and titanium liner-lock keep its weight low. Flipper mechanism is perfect. Quick, fluid, and rock solid lock up...." Read more

"...As others have mentioned its light weight for its size...." Read more

32 customers mention23 positive9 negative

Customers like the sharpness of the knife. They say it comes with a no-BS razor sharp edge and an immaculate pointed tip. The high grind allows for good slicing, and the lock stays in place.

"...The blade is beautifully sculpted, two tone, flat ground, and came as sharp as any knife I've ever bought...." Read more

"...Came with a No-BS razor sharp edge and an immaculate pointed tip...." Read more

"...- The blade was not what i would call sharp. The grind was about 20* on one side and probably 30* on the other side...." Read more

"...The ergo's are top notch and it came razor sharp. The detent is perfect! It's not to strong but holds enough to fire this blade out with a fury...." Read more

21 customers mention17 positive4 negative

Customers like the value of the knife. They say it's worth the price, the price reflects the craftsmanship, and there's no regret purchase.

"...However, i'm still going to carry it!Is it worth the money?..." Read more

"...Also a terrific value for the price; it includes the best contemporary materials at this price point...." Read more

"...Easy to clean and has an excellent grip. Expensive but worth it." Read more

"...No regret purchase." Read more

34 customers mention15 positive19 negative

Customers are mixed about the ease of opening the knife. Some mention that the flipper works amazing, it opens perfectly smooth and easy, and the opening mechanism is a dream. However, others say that it's very difficult to open with gloves on.

"...I will say this is a beautiful knife but it was almost impossible to open. For over $200 I would expect the knife to open smoothly...." Read more

"...The deployment (after about 200+ flips) is incredible. The blade flies open. It rockets past the 0566 which is assisted...." Read more

"...queens and I can imagine that if I had gloves on it would be very difficult to open and I am guessing that if it got dirty or or whatever it would..." Read more

"...this opens perfectly smooth and easy if done properly.I do have a problem with the lock bar locking out too far making it hard to unlock...." Read more

20 customers mention12 positive8 negative

Customers are mixed about the lock of the knife. Some mention that it has a great lock up, it stays in place, and the action stays smooth. However, others say that they have a problem with the lock bar locking out too far, making it hard to unlock.

"...The blade is perfectly centered, the Lock up is 100% first time every time, and while having a tight detent, it does fire out with the flipper...." Read more

"...I do have a problem with the lock bar locking out too far making it hard to unlock...." Read more

"...I especially like the jimping on the flipper: improves traction, indexing, and feels nice. The pocket clip is strong and works better than most...." Read more

"This is a fantastic looking knife with the carbon fiber handle, titanium frame lock, and star like design on the pivot screws...." Read more

Awesome knife, but it has a few small issues...
5 Stars
Awesome knife, but it has a few small issues...
This is my first knife purchase that exceeded $200. I own a half-dozen benchmades, several spyderco's, several kershaws, but only one ZT before purchase which was the 0566 (a great knife as well).Pros:- The quality is superb. I mean really superb. The fit and finish is fantastic.- The deployment (after about 200+ flips) is incredible. The blade flies open. It rockets past the 0566 which is assisted. I'm still amazed out how fast this knife deploys for a manual flipper.- The looks are amazing. I absolutely love the design.- Even though it's a very large knife, it fits my hands very well and very comfortably.- I can carry this in dress slacks, blue jeans, cargo shorts, inside my waistband, etc. Supper easy to carry.- Yes it can be an EDC knife even though it's over 5" long! It's not uncomfortable in your pocket.- The lockup is absolutely, without a doubt, the most solid lockup i have ever experienced. The ZT 0566 was good, but not this good! and benchmades and spyderco's are great, but not this great. It's a huge knife, easy to get the leverage to flex and rock the blade to feel some slack but there is none.- The frame is very sturdy, even through there are only two standoffs at the back of the knife. There is very little flex.- The carbon fiber does provide some nice (yet subtle) traction.- The weight!! This is a light-weight knife for it's size.Cons:- The blade was not what i would call sharp. The grind was about 20* on one side and probably 30* on the other side. I had to reprofile the whole blade in order to sharpened in 20* on each side with my sharpmaker.- The blade is long and you can cut yourself on the tip of the knife with it closed. I have not done this, but I have felt the tip several times when reaching for the knife closed. Not a deal breaker for me, but it is possible to cut yourself.- The top-back corner of the carbon fiber was sharp and dug into my palm when flipping. It was machined perfectly but was just uncomfortable so i took some fine sandpaper and after a few passes it rounded the corner just enough.- The pocket clip is just dumb. I put a pocket clip from my kershaw Camber on the knife for the time being. This allows for a slightly deeper ride in the pocket so that the knife just disappears all together.- There is some rough scratching/ grinding against the blade and lockbar (once the detent ball drops off and right before the lockbar clicks into place). After a few hundred (okay, probably a few thousand at this point) flips, the grinding is about gone. It doesn't seem to affect performance, and it's only for about an 1/8" of travel or so. I think this is just due to the lockbar insert not being polished and it drags the blade for just a bit.- It's so long in my pocket that if i have keys in the same pocket they hit each other. I've never had this problem before so it makes me reconsider how i carry my phone/keys/etc.- Price, yep - it's expensive.Wishlist:- Make this same exact knife the size of the ZT 0450. I'm not into all metal/titanium knifes. So give me the ZT 0450 with a CF scale or a miniature version of this knife and i'll be all over it.Overall:I really like this knife. Once i sharpened the blade with an edge pro, the put a fine 40* inclusive edge on it with a sharpmaker ultra fine stones, followed by stropping, the blade performs at a much higher (and expected) level. It's supper fun to flips and look at. I plan to use it as an EDC and it's a great food prep and steak knife replacement.If i had to do it over again i probably would have bought the ZT 0562CF which is a little bit shorter and the grind looks to be better for slicing. The 0452CF is just long enough that i can't carry keys and the knife in the same pocket and that bothers me a little. However, i'm still going to carry it!Is it worth the money? I have no idea, probably not, but the quality is much higher than all of the $130-$150 knives i own so i guess you do get what you pay for!I've included a picture of this against a Benchmade Sequel 707 which is truly a perfect EDC knife (3" blade). Big difference in size!
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Top reviews from the United States

Reviewed in the United States on June 28, 2015
Pattern Name: Pocket KnifeVerified Purchase
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5.0 out of 5 stars Awesome knife, but it has a few small issues...
Reviewed in the United States on June 28, 2015
This is my first knife purchase that exceeded $200. I own a half-dozen benchmades, several spyderco's, several kershaws, but only one ZT before purchase which was the 0566 (a great knife as well).

Pros:

- The quality is superb. I mean really superb. The fit and finish is fantastic.
- The deployment (after about 200+ flips) is incredible. The blade flies open. It rockets past the 0566 which is assisted. I'm still amazed out how fast this knife deploys for a manual flipper.
- The looks are amazing. I absolutely love the design.
- Even though it's a very large knife, it fits my hands very well and very comfortably.
- I can carry this in dress slacks, blue jeans, cargo shorts, inside my waistband, etc. Supper easy to carry.
- Yes it can be an EDC knife even though it's over 5" long! It's not uncomfortable in your pocket.
- The lockup is absolutely, without a doubt, the most solid lockup i have ever experienced. The ZT 0566 was good, but not this good! and benchmades and spyderco's are great, but not this great. It's a huge knife, easy to get the leverage to flex and rock the blade to feel some slack but there is none.
- The frame is very sturdy, even through there are only two standoffs at the back of the knife. There is very little flex.
- The carbon fiber does provide some nice (yet subtle) traction.
- The weight!! This is a light-weight knife for it's size.

Cons:
- The blade was not what i would call sharp. The grind was about 20* on one side and probably 30* on the other side. I had to reprofile the whole blade in order to sharpened in 20* on each side with my sharpmaker.
- The blade is long and you can cut yourself on the tip of the knife with it closed. I have not done this, but I have felt the tip several times when reaching for the knife closed. Not a deal breaker for me, but it is possible to cut yourself.
- The top-back corner of the carbon fiber was sharp and dug into my palm when flipping. It was machined perfectly but was just uncomfortable so i took some fine sandpaper and after a few passes it rounded the corner just enough.
- The pocket clip is just dumb. I put a pocket clip from my kershaw Camber on the knife for the time being. This allows for a slightly deeper ride in the pocket so that the knife just disappears all together.
- There is some rough scratching/ grinding against the blade and lockbar (once the detent ball drops off and right before the lockbar clicks into place). After a few hundred (okay, probably a few thousand at this point) flips, the grinding is about gone. It doesn't seem to affect performance, and it's only for about an 1/8" of travel or so. I think this is just due to the lockbar insert not being polished and it drags the blade for just a bit.
- It's so long in my pocket that if i have keys in the same pocket they hit each other. I've never had this problem before so it makes me reconsider how i carry my phone/keys/etc.
- Price, yep - it's expensive.

Wishlist:

- Make this same exact knife the size of the ZT 0450. I'm not into all metal/titanium knifes. So give me the ZT 0450 with a CF scale or a miniature version of this knife and i'll be all over it.

Overall:

I really like this knife. Once i sharpened the blade with an edge pro, the put a fine 40* inclusive edge on it with a sharpmaker ultra fine stones, followed by stropping, the blade performs at a much higher (and expected) level. It's supper fun to flips and look at. I plan to use it as an EDC and it's a great food prep and steak knife replacement.

If i had to do it over again i probably would have bought the ZT 0562CF which is a little bit shorter and the grind looks to be better for slicing. The 0452CF is just long enough that i can't carry keys and the knife in the same pocket and that bothers me a little. However, i'm still going to carry it!

Is it worth the money? I have no idea, probably not, but the quality is much higher than all of the $130-$150 knives i own so i guess you do get what you pay for!

I've included a picture of this against a Benchmade Sequel 707 which is truly a perfect EDC knife (3" blade). Big difference in size!
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51 people found this helpful
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Reviewed in the United States on July 21, 2016
Pattern Name: Pocket KnifeVerified Purchase
3 people found this helpful
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Top reviews from other countries

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Gerardo M.
5.0 out of 5 stars Sí, vale la pena…
Reviewed in Mexico on July 4, 2023
Pattern Name: Pocket KnifeVerified Purchase
Sergio
5.0 out of 5 stars Impresionante
Reviewed in Spain on October 6, 2023
Pattern Name: Pocket KnifeVerified Purchase
Benedict H.
5.0 out of 5 stars Der neue Maßstab für Klappmesser (?)
Reviewed in Germany on August 18, 2016
Pattern Name: Pocket KnifeVerified Purchase
61 people found this helpful
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Diego Ib.
5.0 out of 5 stars NAVAJA PREMIUM
Reviewed in Mexico on August 1, 2018
Pattern Name: Pocket KnifeVerified Purchase
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Diego Ib.
5.0 out of 5 stars NAVAJA PREMIUM
Reviewed in Mexico on August 1, 2018
Brevemente, el tamaño es excelente. Si tienes manos grandes y dedos largos, se sujeta a la perfección. Diestro o zurdo, no importa. Diseño ergonómico. No es ultraligera, ni pesada. El peso es el correcto. Resistente y muy firme. Cuerpo de titanio que le ayuda a ahorrar peso junto con la fibra de carbono (pesa 130.4 gramos). Es hermosa y elegante, diseñada por Dmitry Sinkevich.

Tiene un mecanismo (KVT por sus siglas) que al abrirla con un solo dedo, gira de manera rápida (con el tiempo se hace más suave, ya que de nueva muestra un poco de resistencia como toda navaja) y al ver el tamaño de la navaja, lo elegante desaparece para mostrar los 10.4 cm del largo de la hoja. Más larga, es excesivo.

No es el mejor acero, pero usa el S35VN que es excelente y mantendrá el filo por un largo rato y resistente a la corrosión. No necesita más. Un acero más resistente, va a incrementar mucho el precio y será imposible de afilarla cuando lo requiera por la dureza. Esta es muy filosa y rasura los vellos del antebrazo con poco esfuerzo y la punta es muy puntiaguda.

Las navajas plegables deben de tener un mecanismo fuerte para evitar que con un golpe, se cierre la navaja por accidente. Esta aparte tiene un pivote que añade una protección extra y no se va a cerrar. Punto.

El clip esta bien a secas. Muy delgado y hay que usarlo -no de manera delicada- , pero si con un poco de cuidado. Me hubiera gustado algo más resistente y grueso, aparte deberia estar mejor centrado. Tiene agujeros en la carcasa para cambiar al otro lado el clip si se desea. Ingenioso.

Navaja fina muy bonita.
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6 people found this helpful
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leo
5.0 out of 5 stars Zero Tolerance 0452CF
Reviewed in Germany on May 17, 2018
Pattern Name: Pocket KnifeVerified Purchase
3 people found this helpful
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