1.40 mm Cutter Diameter x .080 mm Radius x 4.00 mm Length of Cut Carbide Corner Radius End Mill For Aluminum Alloys, 3 Flutes, TiB2 Coated. Designed for aluminum and aluminum alloys with excellent performance in copper, brass, and bronze alloys, this variable helix end mill with a corner radius profile increases material removal rates (MRR). Order this tool today and use it in your machine as soon as tomorrow morning.