Interchangeable Head Torque Wrench 60 in-lb to 300 in-lb 7 N-m to 34 N-m Drive Size 1/2 in x 3/4 in Custom Preset Custom Preset 8 3/4 in Extended Data Testing Yes NIST Clockwise Accuracy +/-4 Percent Counterclockwise Accuracy Not Rated Alloy Steel Chrome Ergonomic Knurled