Manufactured and tested generally in accordance with DIN3122 and ISO3315 Specifications Expert Quality, socket set containing both Draper Expert ‘Go Through’ and conventional sockets. Manufactured from chrome vanadium steel hardened and tempered with a polished finish. The unique hollow socket technology of the Draper Expert ‘Go Through’ ratchet and sockets is ideal for long fixings. The sockets are edge driven. This allows a fixing to pass through the head and avoid the depth restriction of conventional sockets and ratchets. Packed in tough plastic storage case with soft grip handle.