1/2-Inch Square Drive Torque Wrench, Micro-Adjustable Ratchet Head, 30 to 250-Foot-Pound Klein Tools 57010 Torque range of 30 to 250 foot pound (40.67 to 338.95 Nm) Micro-adjustable for increased accuracy Easy to read and adjust with quick release lever Stainless steel handle provides improved, more comfortable grip N.I.S.T. traceable calibration certificate meeting the ASME standard of 4-percent