Motion Pro Adjustable Torque Wrench Adapter The Motion Pro Adjustable Torque Wrench Adapter is designed to work in conjunction with a combination wrench or Allen wrench. This enables more versatility when using your torque wrench. Features: Will work with 6mm (1/4 in) through 19mm (3/4 in) combination wrenches Will work with 6mm and 8mm Allen wrenches Heat-treated steel with a black oxide finish 3/8 square drive is rated for a maximum torque of 90 ft-lbs