Description: This is the original wowstick 1F pro electric screwdriver bit set with X1(20pcs), X2(20pcs) and X3(16pcs) model can be selected, Fit for XIAO Wowstick series screwdrivers, and other brands screwdrives etc. The Screwdriver Bit Set includes Phillips, Slotted,Hex, Trox, 5-point, Y-type, Square, Triangle, Square, U-type to compatible with most electronical devices. Screwing, drilling and threading muti-function, meetiing your different woring demands. 4mm (1/8inch) hex shank also compatible with most other precison screwdriver set. 4x28mm 4x45mm screw bits size, meet different needs for repairing job. Made from S2 alloy steel with high hardness, strong wear resistance. Specification: Material: S2 Alloy Steel Shank Size: 4mm (1/8 inch) Length: 28mm Screwdriver Bit Model: X1(20PCS): PH0000,PH000,PH00,PHO,PH1,PH2,SL1.0,SL1.5,SL2.0,SL2.5,SL3.0,SL3.5,SL4,H0.7,H0.9,H1.3,H1.5,H2.0,H2.5,H3.0 X2(20PCS): H4.0,T2,T3,T4,T5,T6,T7,T8,T9,T10,T15,T20,P2,P5,P6,Y0.6,Y1.0,Y2.0,Y2.5,Y3.0 X3(16PCS): S0,S1,S2,Triangle 2,Triangle 2.3,Triangle 2.5,Triangle 3.0,U2.0,U2.6,U3.0,W1.5,Needle 0.8,PH0,PH2,SL2.0,H2.0 Quantity: X1+X2+X3 Set Package Includes: 3 Pieces Screw Bits Set(X1/X2/X3)