Draper expert 71 piece metric vortex drive socket set draper expert 71244 b i expert quality i b socket set containing both draper expert vortex and conventional sockets manufactured from chrome vanadium steel hardened tempered chrome plated and polished for corrosion protection the unique hollow socket technology of the draper expert vortex 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