Lang Tools, 6-pc Metric thread restorer tap set

For internal threads. Incl. M6-1.00, M8-1.25, M10-1.50, M12-1.25, M12-1.50, M12-1.75. Used to restore damaged internal threads. This are special threaded restoring taps that ensure a good result and they are safer in restoring threads than using regular thread cutting taps and dies. Regular cutters are sharper and can easily further damage existing threads. Packed in a re-usable clamshell package. USA made. Note: Not suitable for cutting new threads.