16ER/IR 19W External/Internal Threading Insert pack of 10

SELECT EXTERNAL AND INTERNAL CAREFULLY. High-profile accuracy. Parameters are mentioned on the box’s back side suitable for mostly steel grades, stainless steel grades Prevents chip curling, thus less tool breakage. [’19W Internal threading’, ’19W threading isnert’, ‘external threading insert 19W’, ‘Tabikut Inserts’, ‘Threading Inserts’]