9 P825 Rotary Burr - Inverted Cone, Shape N DC double cut flute style with close spaced edges for making inverted v-cuts and rear side chamfering. Carbide design for cutting diameter up to 6 mm; above 6 mm carbide head with toughened and hardened steel shank. DCON MS PRFA DC LU OAL N Bright Workpiece material group suitability. Recommended operating speed (RPM) on page 229. P1.1 P1.2 P1.3 P2.1 P2.2 P2.3 P3.1 P3.2 P3.3 P4.1 P4.2 P4.3 M1.1 M1.2 M2.1 M2.2 M2.3 M3.1 M3.2 M3.3 M4.1 M4.2 K1.1 K1.2 K1.3 K2.1 K2.2 K2.3 K3.1 K3.2 K3.3 K4.1 K4.2 K4.3 K4.4 K4.5 K5.1 K5.2 K5.3 N3.1 N3.2 N3.3 S1.1 S1.2 S1.3 S2.1 S2.2 S3.1 S3.2 S4.1 S4.2 H1.1 H2.1 H2.2 H3.1 H3.2 H4.1 H4.2 DC≤6.00 mm: DCON MS tolerance h6; DC>6.00 mm: Brazed on steel shank with DCON MS tolerance h7. DC DCON MS LU OAL PRFA Product [mm] [mm] [mm] [mm] [°] P8253.0X3.0 3.00 3.00 4.00 38.0 10 P8256.3X3.0 6.30 3.00 6.00 39.0 12 P8256.0X6.0 6.00 6.00 8.00 50.0 10 P8259.6X6.0 9.60 6.00 9.50 55.0 16 P82512.7X6.0 12.70 6.00 12.70 58.0 28 P82516.0X6.0 16.00 6.00 19.00 64.0 18 250