Interchangeable Torque Wrench Head, Drive Size 1/2 in, Size 1/2 in, Overall Length 2 7/8 in, Maximum Torque 2,500 in-lb, 0 Degrees , Square Ratcheting, Alloy Steel, Black Oxide, SAE Loosen and tighten fasteners with this durable, interchangeable wrench head. It is designed for use with compatible interchangeable head torque wrenches.