Features: Taps are designed with spiral-flutes and the chip clearing-process would be better. Works with any drill bit and any screw size, perfect for stripped, broken, stuck-or damaged and removing screws. High hardness screwdriver kit, you can easily remove the rusty, broken, embedded, viscous screw in a few seconds. Use a drill bit to drill a deep hole in the screw head and then reverse the screwdriver counterclockwise into the damaged screw until it is released. Great for all homeowners, woodworkers, mechanics, artists, hobbyists etc. Specifications: Material:High-speed Steel Size:As Picture Shown Package Includes: 1 Set High-speed Steel Drill Bit note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.