Expert Quality, with spring ball bearing for socket retention. Tested to 10,000V for safe 1000V AC or 1500V DC live working. Manufactured to DIN Standard and individually certified to EN 60900 Features and Benefits • Expert Quality • Fully locking collar and ball mechanism to ensure extension and accessory cannot drop off ratchet • Tested to 1000V AC or 1500V DC for safe live working • Manufactured to DIN Standard and individually certified to EN 60900 Contents 1 x VDE Approved Fully Insulated Extension Bar, 1/2" Sq. Dr., 250mm