It includes 30 types of bits and sockets in one set, which would meet your different needs. Chrome-vanadium steel screwdriver bits with heat treatment, which are in high hardness and good toughness. Material: Chrome-vanadium steel Surface Treatment: Sand blasting 1/4" driver bits Quantity:31Pcs Screwdriver Bits Model: Phillips: PH0, PH1*2, PH2*2, PH3 Torq head : T10, T15, T20, T25, T27, T30 Pozi driver: PZ0, PZ1*2, PZ2*2, PZ3 Hex head : H2,H3,H4,H5,H5.5 Slotted: 3, 4, 5, 5.5, 6, 7, mm 1pc Hex Magnetic Holder NOTEDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!1 x 31 in1 screwdriver set