Draper Go Through' Metric Socket Set (19 Piece) - VTX20-19MM/BExpert Quality, 20mm socket set 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. 13x 'Go