Heat-treated, high-carbon steel head for strength and durability. Rim-tempered process around the striking face minimizes chipping from off-center strikes . Patented head-to-handle assembly for a permanent fit . Molded jacket over graphite handle means maximum overstrike protection . Cushioned grip, molded jacket is designed to absorb shock . Ergonomically designed grip is contoured for working comfort while the ribbed channels allows air to ventilate and cool hand, allows moisture to escape