A precision ratchet & driver set with 16 popular bits ideal for the hobbyist craftsman electronics engineer mechanic IT professional or even Optician Bits include Pz Drive Pz 0 Pz 00 Phillips Ph 00 Ph 0 Ph 1 Flat 2 3mm Star T6 T7 T8 T9 T10 Hex 15 2 25mm Sold in multiples of 12