Now you can quickly and accurately restore the threads on large bolts without weakening them by removing excess metal. You can repair threads on any bolt, whether on a pallet, on the floor, or in place -- no special set ups, no rigging, no big wrenches. You can even fix damaged threads on studs in place.

The Threadstone is an abrasive composite casting with internal threads to match external threads on large bolts. Application of the Threadstone will quickly repair small bruises and upsets on bolt threads. When major thread damage is repaired, the Threadstone is used in conjunction with a specially ground chisel.