Draper 1/2" Square Drive Hexagonal Socket Bits - 12mm - 16304 Draper Expert Hexagonal Socket Bits, 1/2" Sq. Dr., 12mm Expert Quality, socket fitted with a hexagonal bit, with an overall length of 55mm. All socket manufactured from hardened and tempered chrome vanadium steel with sand blasted bits of S2 silicon steel. Each socket has a knurled ring for extra grip. Dimensions11.00cm x 5.10cm x 2.20cm Weight0.09kg