Milling Inserts Tpkn 2204 Pdr 2040. For Machine 35Hrc Toughned Steel 75% Engagement Vc 18 0M/Min, ,Insert Tcmt 11 02 04 -Um1525.35 Hrc Toughned Steelvc 200 M/Min Fn 0.15 Mm/Rev Doc 1.0Mm And Insert Quantity: 400