The Hoteche 28 in 1 Precision Screwdriver Bits Set is a versatile and handy tool, it includes 28 different bits, covering a wide range of types such as Phillips, slotted, Torx, and hex, made from chrome vanadium steel, ensuring durability and strength. Set includes: PH00-SL1.5, PH0-SL2.0, PH1-SL3.0, PH2-SL4.0, Y2-Y3, T4-T5, T6-T8, T9-T10, T15-T20, S0-S1, H1.5-H2.0, H2.5-H3.0, H4-U2.6