11IR 1.25 ISO Internal Threading Tabikut Carbide Insert pack of 10 UDRILL25.5MM 4 point contact ensures no

4 point contact ensures no distortion of collet nut while tightening

groove or other similar openings that were created below the surface level of a material

6 mm Flute Length

so you can just check the descriptions of sizes from other brands to fix this insert

ensuring high precision

11IR 1.25 ISO Internal Threading Tabikut Carbide Insert pack of 10 UDRILL25.5MM 4 point contact ensures noThis is an internal threading insert for a turning machine with 1. 25 ISO standard threading. 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.