AK7986 Sealey Premier 9 Pce 3/8" Dr. Metric Allen Key Socket Bit SetOne of a comprehensive range of Premier Hand Tools, suitable for daily professional use.Professional heat treated Chrome Vanadium steel sockets.Fully polished black chrome finish with machined and lacquered surfaces.S2 Steel hex bits with a phosphate finish.Knurled rings assist the gripping of the sockets with oily fingers.Supplied on socket rail.