| 摘要 |
An installation tool for helical threaded insert includes a driving section, a series of driving shafts and a series of head tubes. When a user wants to rebuild a broken screw hole, the user can choose one driving shaft and head tube with suitable size for rebuilding the broken screw hole. Furthermore, a threaded hole of the head tube can adjust the size of the helical threaded insert for matching the broken screw hole so that the user can rebuild the screw hole easily.
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