Solid Carbide End Mill 8mm 8R0.2x24-30x70xD8D1 (Cutting diameter): 8mm D3 (Undercut diameter): 7. 6mm L2 ( Length of cut): 24mm L3 (Length of undercut): 30mm L1 (Total length): 70mm D2 (Shank diameter): 8mm Z (Number of cutting edges): 5 R Corner radius: 0. 2 Helical pitch: 45 Optimized roughing teeth for soft cut and small chips Ascending reinforced tool core for maximum stability Variable helical pitch and unequal tooth pitch for smooth running With central inner cooling Extreme material