OMX5394 Features: * Chamfered service ends * Concentric openings * Applies up to 15pct more torque to fastener * Reduces risk of fastener rounding * 2 holes and groove accept retaining ring and pin, when securing to power tool * Optimized socket wall thickness * Magnetic * Drive Size: 1/2 in * Drive Type: Square * Measuring System: Inch * Locking Type: Pin * Material: Forged Alloy Steel Color/Finish: * Finish: Black Oxide