Proto 1/2" Drive 6-Point Impact Socket, 21mm
The Proto J7421M 1/2" drive impact socket is engineered for use with impact wrenches and air tools, featuring a 6-point design that maximizes contact with fastener flats to reduce rounding and...
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Create A New AccountThe Proto Industrial PRO7421MT is a shallow impact socket designed for demanding industrial and MRO applications. Featuring a 1/2" drive and 21mm opening with a 12-point configuration, it delivers reliable torque transfer and broad fastener compatibility in tight spaces.
Built to Proto's industrial standards, this shallow-profile socket is ideal for use with impact wrenches in automotive, manufacturing, and maintenance environments where durability and precision fit are essential.