Features: *These drill bits are magnetic and can be fixed on a screwdriver, suitable for electric screwdrivers, manual screwdrivers, electric tools Exercises, air drills, etc. *Those Hex Head Screwdriver Bits are made of alloy steel which is a commonly used material in hardware with high hardness. *Magnetic bits are firmly fixed on screwdrivers. Specifications: Product Name:Screwdriver Bit Model(optional):T8， for T9，T27，T35，T8-T40，T8+ for T9+T10+T15+T20，T25+T27+T30+T35+T40 Material: alloy steel Size：Shank Type: 1/4 Hex shank Color:Silver (As Pictures Show) Length:50mm Optional Quantity:1pc/10pcs/5pcs Package Contents: Package 1：1* Screwdriver Bit Package 2：10* Screwdriver Bit Package 3：5* Screwdriver Bit Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. [SECURE MAGNETIC FIT] Designed with a magnetic feature that holds the bits firmly in place on screwdrivers, enhancing efficiency during your projects. [ALLOY STEEL CONSTRUCTION] Made from robust alloy steel, these bits are built to withstand demanding tasks while providing consistent performance. [WIDE RANGE OF SIZES] With options ranging from T10 to T40, this set meets diverse requirements for both casual and professional use. [QUICK CHANGE 1/4 INCH HEX SHANK] The standard hex shank allows for swift bit changes, saving you time and effort on the job. [SIZING REMINDER] Check your own size chart for the best fit; available in packages of 1pc, 5pcs, or 10pcs.