Stanley 54-712 12 oz Jacketed Graphite Ball Peen Hammer 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 Limited Lifetime Warranty