Feature: The headed screwdriver bits is equipped of magnetism and skid resistance, which can firmly the screws and prevent the screws from slipping. The bits are have high concentricity, effectively reducing the bit swinging. Great replacement for missing, bent or broken hex screwdriver bits. The impact screwdriver bit is suitable for 1/4 inch hex electric screwdrivers, hand screwdrivers, electric drills, air drills and so on. Made of high quality S2 steel, high hardness, wear-resistance, and impact resistance, the surface is sandblasted, rust resistance, and durable for a long time. Product 10Pcs PH2 Magnetic 2 Screwdriver Bit Set 1/4 inch Hex Head Drive Bits Anti- Screw Driver Power Drill Bit Screwdriving Bit Tool Material: alloy steel Color: as shown Specification: Head Type: Head Size: 2 / PH2 Overall Length: 6-Inch (150mm) Type: 1/4 inch Hex Package Contents: 10 x Screwdriver Bits 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.