Forged Chrome Vanadium steel heat treated sockets with S2 steel extra -long hex bits. Ball -end bits allow fixings to be driven with the hex shaft up to 30° out of alignment. Fully polished finish with knurled ring to assist gripping socket with oily fingers. Supplied in tough storage case. Forged Chrome Vanadium steel heat treated sockets with S2 steel extra -long hex bits. Ball -end bits allow fixings to be driven with the hex shaft up to 30° out of alignment. Fully polished finish with knurled ring to assist gripping socket with oily fingers. Supplied in tough storage case. Contents: 3/8 inch Sq Drive Hex Bits. 3, 4, 5, 6, 7, 8, 10 x 200 mm. Model No. AK2188.