3/8″ Drive Metric Hex Bit Socket Clip Rail Set 9 Pieces Chrome vanadium S2 steel bits pressed in to the socket Satin finish for a better grip when handling the socket Designed for use with fastenings with a hexagon hole Use with in-hex screws or grub screws Designed and manufactured to DIN7422 Supplied with a clip rail with socket clips for easy storage as a set Set contains:3mm, 4mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 10mm, 12mm