General description A set of stubby single Hex socket bits ranging from 4mm to 19mm in three drive sizes: 1/4", 3/8", and 1/2". Technical specifications 1/4""D socket bits: 4mm, 5mm, 6mm, 7mm, 8mm - Length: 30mm 3/8""D socket bits: 10mm, 12mm, 14mm - Length: 36mm 1/2""D socket bits: 17mm, 19mm - Length: 46mm Manufactured from satin finish chrome vanadium and impact grade S2 steel (14mm from CV steel) Other information Supplied on a socket rail