6.00MM Series 10 HSS-Co 8% 4 Flute Weldon Shank Long Series End Mills - TiCN Coated. Centre cutting. Weldon shank to DIN 1835B. 8-20mm to +0.05 -0.0. Available in HSS-Co 8% Uncoated (for general production machining), HSS-Co 8% TiCN Coated (extends cutter life and improves work material surface finish) and HSS-Co 8% TiALN Coated (dissipates and resists heat, reduces surface friction coupled with high surface hardness).