Widin Carbide Corner Radius End Mill For Mold & Die - Variable Index 4 Flute - 10mmx 40mm X R1A high performance end mill specially designed for mold and die machining applications. It offers excellent machinability and efficient chip evacuation, thanks to its variable index geometry. The variable index design optimizes the cutting edge distribution, reducing cutting forces and promoting smooth chip evacuation, resulting in improved machining efficiency and surface finish. This end mill provides extended customer choice with various corner R