1Designed to remove broken head sliding screws and accessories. The design helps you grab and remove the screws accurately and easily. Suitable for with the joint or chuck an electric power tool, and suit for remove the screw or bad nut screw on a hard wood. 2Easypull spiral groove is embedded in itself to increase resistance. 3These screw extractor tools are very easy to use, just in few steps you get the job done. Using a suitable size screw remover to drill a hole with cutting size and easy to extract the screw or bolt using extractor tool. 4Striped screw extractor removes even the most stubborn stripped, damaged, embedded, rusted and paintedover screws and bolts. 5The material is harder and more durable than most screw extractors in market, the hardness and the durability are better than others.