Zero Tolerance Knives

ZERO TOLERANCE FOR ANYTHING LESS THAN THE BEST

We will 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 in the military and law enforcement, as well as other first responders, such as firefighters and emergency medical personnel.