Use to…

  • Repair a damaged thread.

Buying Tips

  • Pay attention to thread pitch as well as diameter.
  • Consider a kit with a matching drill bit.
  • Some kits come with an insertion tool.

Safety Tips

  • Always wear "eye-protection"/].
  • Consider "impact-protection"/].


The hardest but most brittle of the solid bits, always use a drill clamp or guide.