Ball-peen hammer
A ball-peen (also ball-pein) or machinist's hammer is a type of peening hammer used in metalworking. It has two heads, one flat and the other, called the peen, rounded.
A ball-peen (also ball-pein) or machinist's hammer is a type of peening hammer used in metalworking. It has two heads, one flat and the other, called the peen, rounded.
A ball-peen (also ball-pein) or machinist's hammer is a type of peening hammer used in metalworking. It has two heads, one flat and the other, called the peen, rounded.
Source: Wikipedia "Ball-peen hammer" · CC BY-SA 4.0
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