New Archery Products Slingblade 2 100gr Expandable Broadhead - 3 Pack - Slingblade 2 is one piece ferrule mechanical broad head. The 100gr. unique design of the Slingblade ensures the blades will never open in flight no matter how fast or powerful your bow, or crossbow, is. This broadhead has a 1-3/4in cutting diameter diameter providing massive entrance and exit wounds.