Set containing 1/2in drive impact driver coupler adaptor, 5/16in Hex to 3/8in M hex adaptor & 17 bits. Supplied in case with removable hinged, click lock lid for use as an individual set or as part of Teng Tools tool storage systems. Dimensions: 265 x 142 x 50 mm. Contents: 1 x 1/2in drive reversible impact driver. 1 x 1/2in drive coupler adaptor. 1 x 5/16in Hex to 3/8in Male adaptor. 17 x 5/16in drive 36 mm Hex bits: 6 mm flat, 8 mm flat, 10 mm flat, 12 mm flat, PH1, PH2, PH3, PH4, 4 mm Hex, 5 mm Hex, 6 mm Hex, 8 mm Hex, TX30, TX40, TX45, TX50 & TX55.