13 Pcs Phillips Drill Screwdriver Bit, 2 inch Long, 1/4" Quick Release Hex Shank Magnetic Cross Screwdriving bits set

The 13 types of screwdriver Phillips Tip Bits fairly complete, and Magnetic Bits can be firmly fixed on screwdrivers, and keep screws stuck to them, pretty easy to use. Made of Special S2 Tool Steel, Really Reasonable and Durable, The following shows the material chemical composition. Iron, Fe: 97.0% Silicon: 1.05% Carbon, C: 0.4-0.55% Molybdenum, Mo: 0.4% Manganese, Mn: 0.4% Vanadium, V: ?0.5% Phosphorus, P: ?0.03% Sulfur, S: ?0.03% Specification: Length: 50 mm(2 inch) Materials: S2 Tool Steel Type of Head:hex Shank: 6.35 mm(1/4 inch) Sizes: 50mm*?1.6*PH00 50mm*?2.0*PH0 50mm*?2.5*PH0 50mm*?3.0*PH1 50mm*?3.5*PH1 50mm*?4.0*PH1 50mm*?4.5*PH1 50mm*?5.0*PH1 50mm*?6.0*PH1 50mm*?4.0*PH2 50mm*?4.5*PH2 50mm*?5.0*PH2 50mm*?6.0*PH2 Package Include: 1 * 13 Pcs Screwdriver Bits Set 1 * Bits Holder