Attach a socket to the 1/4" square drive tip to turn hex nuts and hex head screws. The dial on these drivers shows how torque measurements change as you turn. Use to fasten to a specific torque, determine fastener torque specifications, and identify the torque required to loosen tightened fasteners. To use with screwdriver bits, add a bit adapter. Drivers come with a calibration certificate that is traceable to NIST and includes the test measurements that confirm accuracy.

Drivers with memory pointer indicate the maximum torque reached.

Drivers with 1/4" female square drive in handle allow you to attach a T-handle or ratchet to the end for extra leverage when applying high torque.

Note: The accuracy ratings do not apply to the lower 20% of the torque range.