Hardened high carbon steel Trophy Tip® cuts on impact. .027" thick stainless steel blades are ground, honed and stropped to surgical sharpness. Patented black scooped-out Slimline® low-drag ferrule reduces clamping pressure for superior penetration and maximum strength. Patented "O" Ring Blade Retention System design assures perfect head alignment and cushions blades on impact. 125 Grain.