Dagger Tools Rawhide metal shaping mallet, 1 3/4" diameter X 3 3/8" head length, are excellent for shrinking metal. The treated rawhide is non-marring and can be re-shaped by sanding. When paired with a hard opposite side effective cold shrinking via tuck forming can be accomplished. For metal working, metal shaping, sheet metal, and auto body repair and restoration.11" handle length, weight .7lbs