RPT Provides up to 50% more torque on new fasteners Replaces standard hex tools RPT Provides up to 400% more torque on damaged fasteners Prevents rounding of fasteners Ink filled size markings for greater visibility Bi-Directional Design enables loosening and tightening of new and damaged fasteners Sizes included - 3/8, 7/16, 1/2, 9/16, 5/8, 3/4"