Solid Carbide End Mill 8mm 8R0.5x34x75xD8D1 (Cutting diameter): 8mm L2 ( Length of cut): 34mm L1 (Total length): 75mm D2 (Shank diameter): 8mm Z (Number of cutting edges): 6 R Corner radius: 0. 5 Helical pitch: 40 6 cutting edges for best performance and an excellent material removal rate Optimized cutting edges and chip chambers to effectively prevent built up edges and chip stuck Ideal chip evacuation, even with high feed rates and big radial depth of cutting For roughing and finishing