The two, rearward-deploying, expandable blades of the Muzzy Trocar HB Broadhead are dependable and powerful enough to deliver massive entry wounds. Broadhead's compact profile offers a 3/4 x 1 in-flight diameter. Upon impact, the blades deploy to a massive 2-5/8 total cutting surface for killer wounds and massive blood trails. Plus, the deployed head penetrates like a fixed blade by allowing the blades to close if heavy bone is contacted. Once these blades have passed bone, they reopen to continue shredding tissue and vitals. Built on a hard-hitting solid-steel ferrule and chisel tip for deep and deadly penetration.