Excalibur X-Act 100 Grain 3-Blade Mechanical Broadhead (Pack of 3) Excalibur crossbow Crossbow arrows X-act broadhead 6672 100gr 1 7/16 diam Mechanical blades open to cut upon impact Explosive velocity with superior accuracy Clip Loc'' blade control uses no O-rings or bands Cutting diameter: 1-7/16"