1/4", 3/8", 1/2"Sq Drive Chrome Vanadium steel extendable ratchet wrenches. 72-Tooth ratchet action with flip reverse and quick release mechanism. Hardened and tempered with fully polished mirror finish. Quick release locking ring retains extension at set increments, giving different shaft lengths for increased access in space restricted applications. Soft grip handle for added comfort and control. Supplied in EVA foam storage tray. Note: These tools are manufactured in accordance with DIN standards and are designed for improved access, not excessive torque. Misuse will invalidate guarantee.