EDC

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.

Durability9
Warranty9
Repairability8
Value Longevity8
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