This set includes 96 unique 4 mm bits spanning 20 types. 5-pc. Phillips bits: P000, P00, P0, P1, P2 7-pc. Slotted bits: 0.8, 1, 1.5, 2, 2.5, 3, 4 mm 10-pc. Hex bits: 0.028 - 0.050, 1/16 - 5/32 9-pc. Hex bits: 0.7 - 4 mm 3-pc. Pozidrive bits: PZ0, PZ1, PZ2 2-pc. Triple square bits: M3, M4 11-pc. TR hex bits: 5/64 - 5/32 in., 2 - 4 mm 2-pc. Electronic bits: Sim ejector (0.8 mm), Standoff 12-pc. Star bits: T1 - T30 7-pc. TR star bits: TR6 - TR20 5-pc. Triangle bits: TA14- TA27 5-pc. Y-Type bits: Y000, Y00, Y0, Y1, Y2 6-pc. Pentalobe bits: PL1 - PL6 4-pc. Square bits: S00, S0, S1, S2 2-pc. Spanner bits: 2.0, 2.6 mm 2-pc. Clutch bits: 3/32, 1/8 in. 2-pc. Tri-wing bits: TW0, TW1 2-pc. Line head bits: LH-2, LH-3 4 mm Bit Driver Case with foam.