Drop-forged Chrome Vanadium steel sockets, hardened and heat treated with a fully polished mirror finish. S2 Steel hex bits with a blackened finish for resistance to corrosion. Bits feature no shoulder for easier access to recessed fixings. Ball-end bits allow fixings to be driven with the hex shaft up to 30. Sockets include 2mm hex setscrew allowing easy replacement of individual bits. One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. Drop-forged Chrome Vanadium steel sockets, hardened and heat treated with a fully polished mirror finish. S2 Steel hex bits with a blackened finish for resistance to corrosion. Bits feature no shoulder for easier access to recessed fixings. Ball-end bits allow fixings to be driven with the hex shaft up to 30. Sockets include 2mm hex setscrew allowing easy replacement of individual bits. Contents: 3, 4, 5, 6, 7, 8, 10mm. Supplied in storage case. Lifetime guarantee*.