Set of 4 deep, thin wall impact sockets, essential for working on nuts with limited access such as hub nuts. Forged from chrome moly steel. Hardened and tempered for enhanced durability. • Sizes: 30, 32, 34 and 36mm • 1/2"" Drive • 12 Point • Total length of socket: 78mm • Material: 42 CR-MO for strength • Hardened: HRC 45 for durability • Finish: Black phosphate for protection Dimensions 30mm socket - O/D of socket end is 43mm - Wall thickness is 6.2mm 32mm socket - O/D of socket end is 45mm - Wall thickness is 6.2mm 34mm socket - O/D of socket end is 48mm - Wall thickness is 6.4mm 36mm socket - O/D of socket end is 51mm - Wall thickness is 6.7mm All sockets - length 78mm All sockets - O/D of drive end is 36mm