16ER/IR 2.5 ISO External/Internal Threading Insert pack of 10 WIDIA SDMT12 CARBIDE INSERT CUTTER Grooving holders are used for

Grooving holders are used for parting and grooving in the turning machine

you can use any ISO inserts of RPMW10T3/RPKT103/R5 OF mostly brand into this

The BF Chip breaker is primarily for Roughing and finishing

This holder has a JT6 Male taper

22 mm facemill arbour is used in 50 mm and 63 mm Cutter

16ER/IR 2.5 ISO External/Internal Threading Insert pack of 10 WIDIA SDMT12 CARBIDE INSERT CUTTER Grooving holders are used forSELECT EXTERNAL OR 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.