Stanley J57-534 Proto Dead Blow Compo-Cast Combo Face Hammers - 56 oz. Top welded handle-to-head assembly adds extra durability and safety. Hot urethane Uni-Cast construction outlasts all other soft face striking tools. Urethane composition provides shape-retaining faces even after repeated striking on hard surfaces and sharp edges. Handle is reinforced with solid steel shaft for greater strength safety. Top of head molded with a flat surface. Dual head design (Standard Dead Blow and Slim-line heads). Comfortable dual molded grip.