STANLEY; 57-540 COMPO-CAST; SLIMLINE SOFT-FACE HAMMER 5 OZ. SLIMLINE MODEL OFFERS UNIQUE PROFILE FOR ASSEMBLY AND REPAIR APPLICATIONS IN CONFINED AREAS. UNI-CAST; CONSTRUCTION OF NON-FERROUS MATERIALS ELIMINATES SPARKING AND WON'T ABSORB LIQUIDS. NO EXPOSED METAL ON FACE HEAD OR SHAFT. DEAD BLOW FUNCTION ELIMINATES BOUNCEBACK WHEN STRIKING HARDENED SURFACES. STEEL REINFORCED HANDLE PROVIDES STRENGTH AND RESISTS BREAKING ON OVERSTRIKE.