pecifications Color: Gray Material: S2 steel Shank Diameter: 6.35mm Length: 150mm T8:3.5mm T10:4.0mm T15:4.5mm T20:5mm T25:5.5mm T27:6mm T30:6mm T40:6.4mm Suitable For: perate electronic device, perfect for electrician, mechanic and repair work Features S2 Steel hard, good workmanship, high precision Batch magnetic headband in the installation can easily suck screws Wide range of applications, electric screwdriver, manual screwdrivers, drills, and other tools wind approved generic Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 8 x Magnetic Torx Screwdriver Bits