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 1/2" Drive 21mm 6-Point Impact Socket is built for use with impact wrenches and pneumatic tools, delivering reliable torque transfer in demanding industrial and MRO applications. The 6-point design provides maximum contact with fastener flats, reducing the risk of rounding or slipping under heavy loads.
Engineered to Proto's professional standards, this impact socket is a dependable choice for mechanics, maintenance technicians, and tradespeople who require durable, precision-fit sockets for metric fasteners.