The ATD Grooving Insert Series is specially designed to work with standard thread turning tool holders. These inserts can deliver high-quality grooves. Ideal for automatic lathes, the offered inserts are precisely engineered using the bets grade metals. The main application of these inserts is to cut internal threads/grooves on the metal and other surfaces. In addition, the provided tool is well-suited for making deep small bores with a long overhang on the given surface.