MTUB1 is one of a kind product the combines brass knuckle and OTF knife. The body of the knife is made with aircraft grade aluminum which is extremely strong and light. On one side of the body of the brass knuckle, carbon fiber is layered into the body of the knife to reduce weight.
The blade is made out of 440C stainless steel which has the highest carbon content in the 400 stainless steel series. The blade has a hardness of 57HRC. MTUB1 has a glass breaker at the end for any kind of emergency situation.
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