All steel, 1-piece, Shaving sharp - with no loose blades ever! NAP Hellrazor broadheads are the ultimate cut-on-contact one-piece broadheads. Designed to maximize accuracy and penetration out of modern fast, high-performance bows. Stainless steel construction for maximum strength and optimum flight characteristics. Photon blade bonding process laser welds for ultimate strength and consistency. The ferrule base is 5/16" diameter for smooth transition from broadhead to most carbon arrows diameter. The straight edge blades offer a slightly better penetration advantage over convex blades. Features a 1-1/8" cutting diameter. Available in 100 or 125 grains. Please specify. Sold in a 3-pack.