Holders External Screw Lock SystemDouble Lock (D) Type Mini HolderSTypeD PSC External Tool Holder Series Positive Insert Type TOOLING SELECTION Application General Turning Copying GeneralTurning SpecialTurning Insert TypeSystem STJC60° Triangle Type S3V5°HDBiamonSd VTyHpeC 80° TrigonType Round and SpecialPurpose Inserts STJC SVJB a D44 SVJC a D45 a D44 SSVHVBVaBD44 SSVHVCVaCD45 DTJN SVVB a D44 SVVC a D45 DWLN DTJN DWLN a D42 a D42 Classification System for Polygon - Shank Holder PSC 50 - S T J C R 35 060 - 16 PolygonShank ClampingSize (ØD)System HolderStyle Feed DirectionR: Right HandSize (f)HolderLength (L1)Insert CuttingEdge Length D: Double Clamp L: Left Hand S: Screw Clamp N: Neutral Insert Seat Clearance Shape Angle N = 0° C = 7° P = 11° D7