High Precision CNC Internal Threading Inserts 22IR 4 API386 New Nano - PVD Coating

22IR 4 API386 Carbide threading inserts Inserts Style : Standard API Type of Inserts : Internal / right hand inserts Grade: AS300 Coating : New nano-PVD coating Advantages : Ultra-fine grain alloy material ; good wear resistance ; good toughness. Workpiece : Applicable to all kinds of steel , stainless steel, cast iron ,nonferrous metals and other materials thread turning Jinte cnc threading inserts strength AS300 grade ,Special PVD coating , enables trouble-free threading on