Papes Magnus Stringer 85 Grain 4-Blade Broadhead is actory spin-tested for alignment. Knife-grade stainless steel blade with aircraft-aluminum ferrule. The Magnus Diamond Tip will do the job with bone-splitting penetration of any game animal. Out-of-package razor sharp. Blade Weight 85 grain with a cutting diameter of 7/8 inch and a thickness of .040. The Magnus Stringer features a cut on contact diamond tip for strength. Bleeder blades are removable , but broadhead must be shot with bleeder blade installed. 3 per pack.