Titan Tools Bit Driver Set includes: a bit driver, convenient bit holder and 30 screwdriver bits. All bits included: T-9, T-10, T-15, T-20, T-25, T-30, and T-40 star bits; #1 and #2 square bits; #0, #1, #2, and #3 Phillips and Pozidriv bits; 3.5mm, 4.5mm, 5.5mm, 6mm, and 8mm slotted bits; and 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, and 8mm hex bits.