Steel Force Premium Broadhead 4 Blade 100 gr. 3 pk.. Each blade is individually ground stropped to a razor finish. Features cut on contact design .048" thick stainless steel blade aircraft grade ferrule replaceable main and bleeder blades perfect flight characteristics aggressive angle of attack produces superior penetration. Main blade is 2 3/16" long. 4 blade screw in design. 100 grains. 1" cutting diameter. Package Contents: Steel Force Premium Broadhead The Premium Series broadheads are constructed from 440 grade stainless steel precision cut using laser equipment and tempered to 48-52 Rockwell hardness. Each blade is individually ground stropped to a razor finish. Features cut on contact design .048 thick stainless steel blade aircraft grade ferrule replaceable main and bleeder blades perfect flight characteristics aggressive angle of attack produces superior penetration. Main blade is 2 3/16 long. 4 blade screw in design. 100 grains. 1 cutting diameter.