The RobbJack A1-303-06 is a 0.1875-inch diameter, 3-flute end mill designed for high-speed aluminum milling, featuring a 35° helix, polished flutes, and Mirror Edge treatment to optimize edge quality at high RPM. It has a 0.5625-inch length of cut (LOC), a 0.1875-inch shank, and an overall length of 2 inches. The standard version is uncoated as A1-303-06, with a DLC-coated variant available as A1-303-06-DLC. A 0.005-inch corner chamfer and this standard-length geometry tailor it for slotting and finishing aluminum features in automotive and general machining contexts.
