House of Knives is proud to offer Zero Tolerance knives in Canada. The Zero Tolerance or ZT brand debuted in 2006 with an opportunity to offer a Made-in-the-USA line of hard-use knives. Products that would meet the needs of professional men and women in military, law enforcement, and first responder roles. The products are "proudly overbuilt" and features premium materials including titanium, carbon fiber and super steels. All Zero Tolerance knives are handmade in Tualatin, Oregon, USA.