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Max-Drive system allows 15% more torque to applied to the fastener and helps reduce fastener rounding. Box end employs the Max-Drive system, which allows the box end to contact the fastener away from the corner.
Includes 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1, 1-1/16", 1-1/8", 1-1/4".