Sunex 3342, 3/8 Inch Drive Master Impact Socket Set, 42-Piece, SAE/Metric, 5/16 Inch

Cr-mo steel: provides the strength and flexibility to handle high torque impact tools.
Radius corner design: reduces wear and increases torque on fasteners by placing force on fastener walls rather than fastener corners.
Chamfered Opening: quickly aligns fastener to socket.
Dual size markings: laser etched and roll stamped markings to ensure permanent socket identification.
Heavy duty storage case: convenient impact socket transport and storage.
Meets ANSI standards: All sockets are rigorously tested, ensuring peak performance and durability.
Sae: 5/16” to ¾” & metric: 8mm to 19mm