More cutting diameter than most three-blade mechanicals with the power, strength and reliability of a fixed-blade broadhead. Four .035 stainless steel blades have a deadly 2-1/2 total cutting edge, and the four-edge tip is engineered to punch through bone. Alcatraz Bladelock teams with a one-piece Rhinosteel Ferrule to make these heads incredibly strong. Per 3. Cutting diameter: 1-1/4. Weight: 100 gr.