The GUTRENCH is made of 1/4" thick 154 CM stainless and comes with a small kydex rig and belt loop attachment.These guthooks operate on a pivot ring system.When the tip pierces the hyde and cutting edge comes in contact with target area the user pulls upward on the back ring which forces the nose downward to protect against internal intestinal damage to the game. Handy, compact and a must for serious big game hunters!