[Material]: The installation tools take classic high speed steel construction,which is robust and this special design can provide an efficient thread repair job.What’s more,the inserts are heat-treated 45#steel which possess greater strength and longer service life.

[Material]: The installation tools take classic high speed steel construction,which is robust and this special design can provide an efficient thread repair job.What’s more,the inserts are heat-treated 45#steel which possess greater strength and longer service life.