Sealey 450mm 1/2"Sq Drive Breaker Bar, Long/Slim Style Handle High Chrome Finish. Hardened and tempered Chrome Vanadium steel bar with high chrome finish. Long, slim style handle with spring loaded socket retention. Fully replaceable knuckle joint. Model No: AK7301. Drive: 1/2"Sq. Length: 450mm. Replacement Knuckle Joint Model No: AK7301RK. Knuckle joints are not covered by the lifetime warranty and are treated as consumable items.