Material Number 3020185ISO Catalog ID SDMT1204PDRMLGrade TN6540Cutting Edges per Insert 4[D] Insert IC Size 12.7 mm[L10] Insert Cutting Edge Length 12.7 mm[S] Insert Thickness 4.77 mm[BS] Corner Facet Length 1.1 mm[Rε] Corner Radius 1.2 mmAverage Chip Thickness [HM] 0.08 mm