11pcs 12pcs Security Bit Set Tamper Proof Screwdriver Drill Bit Screw Driver Bits Torx Flat Head 1/4" Hex Driver Bits

Description: Magnetic bits are firmly fixed on screwdrivers. 12 sizes a set at an inexpensive price can meet your requirements. Screwdriver Bits are made of S2 alloy steel which is a commonly used material in hardware with high hardness. Features: Brand new and high quality. All bits have a center bore except the size of T5 and T6.T8. Those bits, magnetic that can be firmly fixed on screwdrivers, fit for electric screwdrivers, hand screwdrivers, electric drills, air drills and so forth. Specification: Type of shank: 6.35mm / 1/4 inch hex. Size: T5, T6, T7, T8, T9, T10, T15, T20, T25, T27, T30, T40. Overall length .: 50mm / 2 inch. Note: Due to lighting effects, monitor's brightness, contrast settings etc, there could be some slight differences in the color tone of the pictures and the actual item. Please allow 1-2mm distinguish due to manual measurement, thanks.