The Muzzy Crossbow 3 Blade (100 Grain) features the same Bad To The Bone construction that has been part of Muzzy since 1984. Featuring an aircraft grade aluminum ferrule, stainless steel blades and our bone busting Trocar Tip. All of this with a ferrule designed to aerodynamically meet the diameter of a crossbow bolt for improved accuracy and penetration. 1 3/16 Cut 6 pack Aircraft grade aluminum ferrule Stainless steel blades Bone busting Trocar tip 100 Grain total weight 1 3/16 Cutting diameter