Hardened high carbon steel Trophy Tip cuts on impact. .027 in 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. 100 Grain.