Ball-Peen Hammer 4 oz Head - SFC Tools - 37-977 Good for shaping soft sheet metal or wire. steel head has a flat face and a domed face. The head is mounted on a hardwood handle. Hammer measures 9.5x2.75x0.88 (24.1x7x2.2 cm). Flat face measures 0.75 (19.1 mm) diameter. Domed face measures 0.75 (19.1 mm) diameter. Head weighs 4 oz (113.4 g). Net weight 6.5 oz (184.3 g).