Number of pieces: 55 The set consists of: 21 screwdriver bits: SL4, SL5, SL6, PH1, PH2, PH2, PH2, PH3, PZ1, PZ2, PZ3, T10, T15, T20, T25, T30, T40, H3, H4, H5, H6 20 precsion screwdriver bits: 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- Bits adaptor: (25 Millimeters) 9 1/4 Inch sockets: 4 Millimeters, 5 Millimeters, 6 Millimeters, 7 Millimeters, 8 Millimeters, 9 Millimeters, 10 Millimeters, 11 Millimeters, 12 Millimeters 1- Bits holder: 4 x 60 Millimeters 1- Bits holder 6.35 x 50 Millimeters 1- Ratchet handle 1- Style handle