9 P521 Rotary Burr - Ball Nosed Cone, Shape L AS single cut flute style with light left-hand cross cut for enlarging holes, rounding edges and surface-finishing in tight narrow angles or other hard to reach areas. Solid carbide shank for rigidity. First choice for superalloys. Bright Workpiece material group suitability. Recommended operating speed (RPM) on page 229. M3.1 M3.2 M3.3 M4.1 M4.2 S1.1 S1.2 S1.3 S2.1 S2.2 S3.1 S3.2 S4.1 S4.2 DCON MS tolerance h6. Products from this series are also available in set. Please see P880. Product DC DCON MS LU OAL PRFA [mm] [mm] [mm] [mm] [°] P5213.0X3.0 3.00 3.00 14.00 38.0 8 281