Zero Tolerance

The first ZT knives were produced in 2006 alongside Kai USA's longstanding, Kershaw Knives brand. The original line of ZT knives included collaborations between custom knifemaker Ken Onion and Strider Knives. Early products were combat knives, but Zero Tolerance later expanded its market to include more general use knives. Currently, all ZT products are manufactured in Kai USA's Tualatin, Oregon facility.