Muzzy Bowhunting Trocar Crossbow Broadheads 3 Blade, 1-3/16  Inch Cutting Diameter, 3 Pack 0.035-inch-thick helix-blade 100-grain crossbow and a 125-grain crossbow solid-steel ferrule, razor-sharp blades and a 1 3/16-inch cutting diameter, 100 Grain 3 Blade 1 3/16" Cutting Circle Helix Blade Design for Maximum Accuracy .035" Thick Razor Sharp Blades All 1 piece steel ferrule