Widin Carbide Corner Radius End Mill For Aluminium & Non-Ferrous - 3 Flute 45° Helix - 20mm x R5.0Widin Carbide Corner Radius End Mill for Aluminium & Non Ferrous is a high precision cutting tool designed for contouring and finishing soft metals. With a 20 mm diameter and a 5. 0 mm corner radius (R5. 0), this 3 flute end mill features a 45 helix that delivers clean radii and steady cutting performance on aluminum and other non ferrous alloys. Diameter and corner radius: 20 mm diameter with a 5. 0 mm corner radius (R5. 0) for durable edges and