The set contains 21 bits sized 6.35x25 mm (SL4, SL5, SL6, PH1, PH2, PH2, PH2, PH3, PZ1, PZ2, PZ3, T10, T15, T20, T25, T30, T40, H3, H4, H5, H6), 20 precision bits sized 4x28 mm (SL1.5, SL2, SL2.5, SL3, PH000, PH00, PH0, PH1, T6, T7, T8, T9, T10, T15, T20, H1.5, H2.0, H2.5, H3.0, H4.0), 1 adapter 4-6 mm (25 mm), 9 1/4" sockets sized 20.5 mm (4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm), 1 4x60 mm bit holder, 1 6.35x50 mm bit holder, and a stylish handle.