Regal 099625RM carbide ball nose end mill features 5/16-inch cutting diameter with 4-flute design for precision machining of hardened materials. Tungsten carbide construction with 5/16-inch shank and 9/16-inch length of cut excels in machining hardened steels, high alloy steels, cast iron, and abrasive materials. Engineered for superior performance in CrNi steels, brass, copper, high-silicon aluminum, and abrasive plastics.