Screwdriver Bit Set: 1 inches (PH1,PH2x2,PH3,T10,T15,T20x2,T25x2,T30,SQ2x2,PZ2,H5,H6,H1/4,H1/8,SL#8,SL#10),2 inches(PH2)x1 driver bits and 1 Pieces 2.5 inches impact bit holder,they're all have a customized organizer sleeve Impact Bit Tips: Impact Shock Absorbent Zone stands up to impact drivers. It can be handled a of higher torque impact drivers S2 Alloy Steel: it owns the features of high hardness and good toughness and resistance through strictly heat treatment, and suitable for any industrial use Precision Tips Head: deliver a better fit and less cam-out, each edge can accurately lock the screw, stabilizes without slipping and improves work efficiency. Avoid damaging the screw and screwdriver head Wide range of uses: Made to fit 1/4 In. hex impact drivers drill screw bit set is not only work with impact driver, but also magnetic screwdriver bit perfect for any regular drill, electric,hand screwdrivers and more Color: As Shown Material: S2 Package Contents: 22-piece electric head set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.