Features:Drop-forged Chrome Vanadium steel spanners. Hardened and tempered with a fully polished, mirror finish. Open end and WallDrive ring combination with long slim shaft. Specifications:Model No: AK63012Contents: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mmHeight: 43Width: 522Length: 287.