The Wheeler 55-Piece Hex and Torx Screwdriver Set includes all of the most common bits, one fourth inch driver handle, one 4mm driver handle. Comes in a convenient case for safe storage. SAE Hex (.028, .035, .05, 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8) Metric Hex (.7mm, .9mm, 1.3mm, 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 10mm)Torx (T1, T2, T3, T4, TT5, TT6, TT7, TT8, TT9, TT10, TT15, TT20, TT25, TT30, TT35, TT40, TT45 and TT50.