Mac Tools' 1/4"-drive Torque Screwdrivers feature a hexagon socket drive for bits and have an internal feature for accepting 1/4" ratchets at the base of the handle. No. TSM16-88 has a range from 16 in./lbs. to 88 in./lbs.; No. TSM4-22 has a range of 4 in./lbs. to 22 in./lbs. Features include:
Ergonomically designed for comfortable grip.
Accuracy exceeds ISO 6789 specified performance of +/-6 percent.
Automatic release upon reaching the specified torque.