Material: SteelItem Name: Torx Head Drill Bit SetQuantity&Size: 10pcs Torx Head Size(Blue Coated): T7, T8, T9, T10, T15, T20, T25, T27, T30, T40Strong magnetic,good workmanship,high precision.Made of chromium vanadium alloy steel,anti-impact and tough,great wear resistant.Using the correct screwdriver bar, pay the less effort, and can easily unscrew the screws.The bit each edge can beaccurately locked screws, no damage to the screw, and the screwdriver head.Widely used in manual electric screwdriver, screwdriver, drill, air and other tools.Application: Suitable for electronics, automotive parts, furniture, other commercial and industrial applications,etc.Package Includes: 18Pcs x Magnetic Screwdriver BitsNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.