Overview Reviews Product Description Cobalt Center cutting Bright finish (TiN and TiCN coatings available) Truncated knuckle form reduces drag and friction Chip breaker cutting edge allows for heavier cuts and higher speeds / feeds Fine pitch produces a smoother finish that often eliminates the need for a finishing cut Clarkson Osborn Catalog Product Videos Custom Field Diameter 18mm Material Cobalt Package quantity/sold as each 1 Product Reviews Write a Review Write a Review × Clarkson-Osborn 18mm Cobalt 4 Flute Threaded Shank Roughing End Mill MC39180 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *