High quality materialsThe tool for removing defective screws is made of HSS. High hardness, reusable, highly efficient, durable and resistant to high temperatures, allowing you to remove damaged screws and bolts. Change bits at will: the screw extractor set contains 20 different sized extractors, 1 adapter and 1 lengthened screwdriver head holder, and change the extractor bits, without wasting time and effort. Multi-purposeThe screwdriver is suitable for most screws, for example screws socket, machine screws, pull screws, wood screws, hex screws, sheet metal screws and other screws.Smart DesignCombined with extension bit holder and adapter pedestal, separate polishing and bit extraction allow occasional bit changes without backtracking, timeless and effortless for the job. Product Size: 13*10*3.5 cm Product colour: silver Quantity delivered: 22 pieces