Zero Tolerance 0350 Folding Knife
ELITE tier
Zero Tolerance is Kai USA's premium knife division, and the 0350 is the knife that defined the modern assisted-opening EDC folder.
Origin
Made in USA
Warranty
Lifetime warranty covering defects in materials and workmanship; free factory sharpening, cleaning, and adjustment service
Price
~$160 (Mid)
Community
Reddit r/BuyItForLife Approved
Built in Tualatin, Oregon with S30V stainless steel — the same blade steel found in knives costing twice as much — the 0350 delivers a combination of edge retention, corrosion resistance, and toughness that few production knives match. The SpeedSafe assisted opening deploys the 3.
25-inch blade with a flick of the flipper tab, locking into a liner lock that engages with zero side-to-side play. The G-10 handle overlay over a steel liner frame provides aggressive grip texture without the weight of a full-steel handle.
Tungsten DLC coating on the blade reduces glare and adds a layer of corrosion protection beyond the S30V's inherent stainless properties. ZT backs every knife with a lifetime warranty covering materials and workmanship, and the factory will sharpen, clean, and adjust any ZT knife sent in for service.
At around $160, the 0350 sits at the boundary between production and semi-custom. For hard-use EDC where the knife will be used aggressively — not just carried — Zero Tolerance builds with the same intent as their military and first-responder designs.
