This newest offering in the legendary Muzzy line of broadheads is a lethal four-blade, short-profile, 100-grain, fixed-blade design that adds the penetrating power of blades that are .005 thicker than those on other Muzzy broadheads (.025 vs. .020 ). The patented process used to make the MX-4 ensures true flight and potent penetration where others may fail, and the cutting diameter of 1.125 means well-hit game won't go far. Per 3. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Fixed-Blade Broadheads.