Used to dome metal from the inside. The metal is stretched from the inside as it is supported on a sand bag or a depression carved in wood. Doming a piece of metal before raising makes it easier to control because the shape becomes rigid. This hammer also leaves a very interesting dimpled texture on flat and slightly domed metal when hammering on the outside of a form against a stake.  Fretz Hammers feature beautiful and strong Padauk wood handles, oil finished and tapering to a slender neck for flexibility. Head is cast from 420-grade stainless steel and hardened to 50HRC for maximum durability. Faces measure 19mm (7/8") and 14mm (1/2") in diameter and are polished to a mirror shine.  Made in Vietnam.