Excalibur Crossbow BoltCutter Broadhead Replacement Blades 18 pk.. The Boltcutter is made entirely from high strength stainless steel to withstand the hardest hit and still deliver devastating terminal performance. Features of Excalibur Crossbow Boltcutter Broadhead: 1-1/16" cutting head High-strength stainless steel construction Designed for use with high-speed hunting crossbows Package Contents: Excalibur Crossbow Boltcutter Broadhead Excalibur Crossbow 6671: BoltCutter Broadhead Replacement Blades 18 pk.