GRIP 89340 MM Combination Wrench Set, Chrome, 15-Piece Heat treated, chrome plated, drop forged carbon steel. Buffed to a mirror polish finish. Precision machined 15 degree open and 12 point box ends. Sizes: 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm.