GSFN: SELF-GRIP slitting inserts. Grade : IC20 Uncoated carbide grade. ISO Range - P/M/K: (M10-M25)(K10-K20) ISO Range - H/S/N: (H05-H15)(S05-S20)(N05-N25) Grade or Coating Type: UN-COATED Coating Layers: Uncoated Grade : IC328 ISO Range - P/M/K: (P25-P40)(M30-M40) ISO Range - H/S/N: (S20-S30) Grade or Coating Type: PVD Coating Layers: TiCN Grade : IC908 Machining conditions. ISO Range - P/M/K: (P15-P30)(M20-M30)(K20-K40) ISO Range - H/S/N: (H10-H20)(S10-S25) Grade or Coating Type: PVD Coating Layers: TiAlN Grade : IC928 Heavy operations. ISO Range - P/M/K: (P20-P40)(M25-M35) ISO Range - H/S/N: (S15-S30) Grade or Coating Type: PVD Coating Layers: TiAlN