General description Sealey Premier Extra-Long Double End Ring Spanner Set includes 7 pieces of extra-long, drop-forged, Chrome Vanadium steel 12-point WallDrive® ring spanners. This set is designed for daily professional use and is supplied in a convenient storage tray. Technical specifications Material: Chrome Vanadium steel Finish: Hardened, tempered, and chrome plated with a fully polished mirror finish Sizes: 8 x 10mm, 11 x 13mm, 14 x 15mm, 16 x 17mm, 18 x 19mm, 20 x 21mm, 22 x 24mm Model No.: AK6311 EAN: 5024209676007 Other information