RedLine Tools - 1/2 (.5000) 90° Carbide Chamfer Mill, 1/4 (.2500) Max Chamfer, 4 Flutes, AlTiN Coating .5000 Shank Dia, 3.0000 OAL - RCM4023: Industrial & Scientific. RedLine Tools - 1/2 (.5000) 90° Carbide Chamfer Mill, 1/4 (.2500) Max Chamfer, 4 Flutes, AlTiN Coating .5000 Shank Dia, 3.0000 OAL - RCM4023: Industrial & Scientific. Uncoated (Bright) . American Made Carbide . 1/8 Cutting Diameter . 60° Chamfer Angle . Photos may not be the exact representation of products. . Need to chamfer a hole or finish an edge? has an extensive offering of chamfer tools and angle cutters to help you get the job done right the first time. Manufactured from solid tungsten carbide, and available both coated and uncoated, RedLine’s selection of countersinks and chamfer mills have the hardness and overall durability to remain sharp and effective when high repeatability and output is required. For hole finishing we offer HSS and carbide countersinks as well as a complete selection of combined drill countersinks to meet your specific project requirements. If you are finishing an edge, our carbide chamfer mills, edge breakers, Angle Cutters or Double Angle Cutters provide the accurate cuts you need every time. To browse our selection of American Made simply view the tools below, or use the categories along the left side of the page to view tools by type, length, shank diameter, and more. . . .