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Amazon.com: Estwing Lineman's Hammer - 40 oz Electrical Utility Tool with Smooth Face & Shock Reduction Grip - E3-40L , Blue : Everything Else
GemAtlas - 1.Ball Pein Hammer- It is used in metalworking. It has two heads, one flat and the other called the pein used for creating carves and texture on the metal. 2.Repousse/
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