High Quality: S2 steel material which is durable, anti-shock and tough, a commonly used material in hardware.Magnetic: Strong magnetic, good workmanship, can be firmly fixed on screwdrivers and suck screws easily by using it.Exquisite Workmanship: Each edge can be precisely locked screws, no damage to the screw, and screwdriver head.Length: 150mm/6inch. Size: T8, T10, T15, T20, T25, T27, T30, T40. Shank Type: 6.35mm(1/4") hex.Can be used for manual electric screwdriver, screwdriver, electric drill, air and other tools.Specification:Material: High Quality S2 SteelHex Shank Size: 1/4"(6.35mm)Length: 150mmSize: T8, T10, T15, T20, T25, T27, T30, T40Content:8PCS x 150mm Magnetic Head Torx ScrewdriverNote: This does not include other things, the color is based on the first picture, and the other pictures only show the effectDue to the differences between different monitors, the picture may not reflect the actual color of the item.Due to manual measurement. Please allow the deviation. Thank