YG-1 E2080 Cobalt Steel Square Nose End Mill, Long Reach, Weldon Shank, Uncoated (Bright) Finish, 30 Deg Helix, 2 Flutes, 4.75" Overall Length, 0.875" Cutting Diameter, 0.875" Shank Diameter Long-length end mills have longer cutting edges and can make deeper cuts than standard-length end mills Center-cutting design allows the end mill to plunge into material like a drill bit while also performing conventional surface milling Two flutes offer better chip-carrying capacity than end mills with more flutes, enhancing the tools ability to remove material Cobalt steel resists abrasion and high cutting temperatures, and has higher feed rates than high-speed steel Uncoated (bright) tools have no additional surface treatment or coating for use on a range of materials