This set from Steel Vision Tools has all the essential screwdriver bits you will need for any project. The high flex torsion material allows each bit to achieve maximum torque while still maintaining the life of the bit and not damaging the fastener.50-piece Impact Torsion Bit Set:(Row 1) 1 in Bits: T10, T10, T15, T15, T20, T20, T25(Row 2) 1 in Bits: T25, T25, T25, T25, T30, T30, T40(Row 3) 1 in Bits: T40, SQ1, SQ1, SQ2, SQ2, SQ2, SQ2(Row 4) 1 in Bits: SQ2, SQ3, SQ3, SL8, SL8, SL10, SL10(Row 5) 1 in Bits: PH1, PH1, PH2, PH2, PH2, PH2, PH2(Row 6) 1 in Bits: PH2 Dimpler, PH3, PH3, PR2, PR2, P2R2, P2R2(Row 7) 2 in Bits: PH2, PH2, SQ2, SQ2, T25, T25(1) 3 in Magnetic Screw Bit Holder(1) 1 in PH2 Bit35-piece Impact Torsion Bit Set:(Row 1) 2 in Bits: PH2 Dimpler, 1/4 in Adapter, 3/8 in Adapter, T25, 1/4 in Nut Setter, T25, 5/16 in Nut Setter(Row 2) 3-1/2 in Bits: PH2, PH2, SQ2, SQ2, T25, T25, 3 in Screw Guide(Row 3) 1 in Bits: PH1, PH2, PH2, SL8, PH3, SQ2, T25