Description:  1/4'' hex shank magnetic screwdriver bits set,  A/B/C/D type.      Features:   1. Exquisite workmanship,  each edge can be accurately locked screws, no damage to the screw, and the screwdriver head.   2. Made of high quality S2 alloy steel, high hardness(60 HRC), high precision.   3. Special heat treatment makes the bits more durable, increasing service life.   4. Connecting rod with strong magnetic, can conduct batch head to strengthen the adsorption screw, convenient and quick.   5. Can be used for manual electric screwdriver, manual screwdriver, electric drill, group general tools.   6. Multiple specifications, cover cross - word hexagonal plum flower and other batches to meet different use requirements.   7. High quality explosion-proof plastics are durable and easy to carry in storage.     Specification:  Materials: S2 alloy steel;  Type of shank: 6.35mm / 0.25'' hex;  Explosion-proof: No;  Insulation: No;  Magnetic: Yes;  System: Metric system;  Spinner: Suit;    Quantity               Items Included:  A-51pcs ;  25mm:T40, T30, T27, T25, T20, T15, T10, T9;  25mm:T8, T7, T6, T5, PH3, PH2, PH1, PH0;  25mm:H6, H5, H4, H3, H2.5, H2, H1.5;  25mm: △27, △23, △20, △18, θ6, θ5, θ4, θ3, θ2;  50mm:6.0PH2, 4.5PH2, 4.5PH1, 3.0PH1, θ6, θ5, θ3, θ2;  10pc: S1, S2, S3, Y1, Y2, Y3, U5, U6, U7, U8;  1pc: 60mm Red self locking lever;  B-43pcs ;  25mm:T40, T30, T27, T25, T20, T15, T10, T9;  25mm:T8, T7, T6, T5, PH3, PH2, PH1, PH0;  25mm:H6, H5, H4, H3, H2.5, H2, H1.5, θ6;  75mm:6.0PH2, 4.5PH2, 4.5PH1, 3.0PH1, θ6, θ5, θ3, θ2;  10pc: S1, S2, S3, Y1, Y2, Y3, U5, U6, U7, U8;  1pc: 60mmRed self locking lever;  C-43pcs ;  25mm:θ6, H6, H5, H4, H3, H2.5, H2, H1.5;  25mm: PH3, PH2, PH1, PH0, T40, T30, T27, T25;  100mm: 6.0PH2, 4.5PH2, 4.0PH1, 3.0PH1;  25mm: T20, T15, T10, T9, T8, T7, T6, T5;  50mm: θ6, θ5, θ3, θ2;  10pc: S1, S2, S3, Y1, Y2, Y3, U5, U6, U7, U8;  1pc: 60mm Red self locking lever;  D-35pcs ;  25mm:T40, T30, T27, T25, T20, T15, T10, T9;  25mm:T8, H6, H5, H4, H3, H2.5, H2, H1.5;  100mm: 6.0PH2, 5.0PH2, 4.0PH2, 5.0PH1, 4.0PH1, 3.0PH1, θ5, θ3;  10pc: S1, S2, S3, Y1, Y2, Y3, U5, U6, U7, U8;  1pc: 60mm Red self locking lever;  ;  Package Included:  1 x Screwdriver bits set(A/B/C/D Type)