Size: 13mm single Hex x 1/2"D . Deep socket, depth: 77mm. Hex (6pt) head drives from the flats to provide more torque, ideal for damaged or seized nuts & bolts. Manufactured from chrome vanadium with a polished finish. Part of a range of deep sockets available individually. For other sizes, please see Laser Part Nos. 1982 - 1996 (10mm to 31mm).