Zero Tolerance Knives was introduced by the Kai Group, a global cutlery company, in 2006 with an aim to meet the demands of the professionals in the military and law enforcement field, firefighters, and emergency medical personnel. The brand started with combat knives but later expanded to general use knives as well. Made in the USA, Zero Tolerance Knives deliver premium quality everyday carry pocket knives. Check out our excellent prices on Zero Tolerance apparel below.