| 摘要 |
A screw extractor utilizes a twist drill affixed to one end of an extractor bit having a shank portion suitable for grasping by the chuck end of an electric drill. In use, the drill causes a hole to be formed along the length of the body of the screw to be extracted. Continued rotation in a selected direction of the assembly causes the extractor bit to grasp the walls of the hole. The screw is easily removed without requiring the user to first drill a hole and then manually remove the screw utilizing a separate extractor bit.
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