576-85-990 Features: Maxi-Drive allows 15pct more torque to applied to the fastener and helps reduce fastener rounding. Box end employs the Maxi-Drive system, which allows the box end to contact the fastener away from the corner.
Opening Size: 3/8 in, 7/16 in, 1/2 in, 9/16 in, 5/8 in, 11/16 in, 3/4 in, 13/16 in, 7/8 in, 15/16 in, 1 in, 1 1/16 in, 1 1/8 in, 1 1/4 in, 3/8 in [Min], 1 1/4 in Stanley wrenches are designed to meet or exceed ANSI specifications.
