Drilling tools | CoroDrill® 860 CoroDrill® 860-GM, solid carbide step and chamfer drill​​ For multi-materials. Internal coolant supply Common data values COATING PVD TiAlSiN+TiSiN Metric (mm) P M K N S H X1BM X1BM X1BM X1BM X1BM X1BM Ordering code DC 1 DC 2 LU _ _ LCF OAL DCONMS SIG LF PL CP TCDCON TCHA [mm] [mm] [mm] [mm] [mm] [mm] [deg] [mm] [mm] [bar] 860.2-0800-026A1-GM ● ● ● ○ ○ ● 8.00 10.80 26.90 42.00 102.00 12.00 140.00 100.60 1.40 20 h6 H9 860.2-1200-040A1-GM ● ● ● ○ ○ ● 12.00 15.80 40.10 59.00 115.00 16.00 140.00 112.90 2.10 20 h6 H9 860.2-1400-047A1-GM ● ● ● ○ ○ ● 14.00 18.90 47.10 78.00 131.00 20.00 140.00 128.60 2.40 20 h6 H9 ● = First choice ○ = Good choice 361