▲Features 1. S2 high quality steel,which hardness up to HRC.60, wear-resistant & durable 2. Magnetic bits can be firmly fixed on screwdrivers and keep screws stuck to them, improve your work efficiency 3. With 1/4 inch hex shaft, fit for electric screwdrivers, hand screwdrivers, electric drills, air drills and so forth 4. Perfect for electrician, mechanic repair work and installation of furniture pieces. ▲Materials: S2 Alloy Steel ▲Type of Head: Cross Phillips and Slotted Head ▲Type of Hex Shank: 6.35mm / 1/4 inch ▲Overall Length: 100mm/ 4 Inch ▲6pcs Phillips Screwdriver Bits Sizes: PH1*Φ3, PH1*Φ4, PH2*Φ4, PH2*Φ4.5, PH2*Φ5, PH2*Φ6 ▲4pcs Slotted Screwdriver Bits Sizes SL3, SL4, SL5, SL6 ▲Package Included: 10 x Screwdriver Bits