Brand: Rui Cast Name: sharp 55 degree ball-cutter mold coating: black coating Specifications: R0.5x4x50-2F applicable processing materials: A3, S45C, 40Cr, 42CrMo, 20Cr, Cr12, H13, NAK80,718 such as carbon prime steel, cast steel, plastic molds, alloy steel, tool steel, quenched and tempered steel, heat-treated steel, stainless steel. Main features: the use of the blade portion excellent heat resistance coating to increase tool wear resistance and hardness, increase tool life and stability. Capable of high hardness of hardened steel (HRC40 ~ 55 degrees) material milling. 2/4 blade flat end mill suitable for side milling, milling grooves wide range of applications. Reduce the number of tool changes to improve when the machine Jia actuation rate, saving mold making process.