Working Tight Curves: The rounded or peen end fits into confined areas, sharp corners, and deep recesses where flat dollies cannot reach.
Removing Dents: It acts as a specialized backing anvil (or "hammer off" / "hammer on" support) behind a panel while a hammer strikes the front side to push low spots outward.
Shaping and Smoothing: The contoured surface helps replicate factory curves, body lines, and crown details on vehicle fenders, door skins, and custom panels