Accurately tighten nuts and bolts with one of these Digital Torque Wrenches, offered with 3/8" or 1/2" square quick-release drive. Standard functions include torque, measurement and mode settings, with operation possible in clockwise and counter-clockwise directions. LCD display shows kg-cm, N-m, in.lb. and ft.lb. measurements. A buzzer indicates the desired torque has been achieved. Grips are soft, anti-slip. Wrenches operate on four AAA batteries, sold separately. One year warranty.