Item model number 427562. Part Number 427562. 6-point hex socket for maximum torque transfer to the face of the fastener. Chamfered ends and thin walls for positive location on fastener. Contents: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16" and 3/4" AF.
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