Zero Tolerance has one mission:

To continue to build the kind of premium-quality, professional knives that our customers can depend on every single day.

Zero Tolerance is a brand of Kai USA Ltd. The ZT brand first made its appearance in 2006 when we saw a place in the market for a Made-in-the-USA line of hard-use knives that would meet the needs of professionals, such as the military, law enforcement, and other first responders, such as firefighters and emergency medical personnel.

The initial products were combat knives, but since that time, the line has expanded to include a variety of general-use and premium knives. Although Zero Tolerance products are larger, heavier knives, many customers use them as everyday carrying knives.

Designed and manufactured to stand up to heavy-duty use

Zero Tolerance Knives are built of premium materials such as S30V, ELMAX, or 154CM blade steel and 3-D machined G-10 handle scales. The knives have earned a reputation among their devoted fans for being “built like a tank” or “a real beast” or even being—proudly—“overbuilt.”

A brand of Kai USA Ltd

Kai USA Ltd., the makers of Zero Tolerance Knives, is a member of the Kai Group. Kai is a major manufacturer and distributor of disposable razors, surgical tools, personal care products, and housewares in Japan.

Zero Tolerance Knives