Solid Carbide End Mill 20mm 20R0.3x41-52x104xD20D1 (Cutting diameter): 20mm D3 (Undercut diameter): 19. 5mm L2 (Length of cut): 41mm L3 (Length of undercut): 52mm L1 (Total length): 104mm D2 (Shank diameter): 20mm Z (Number of cutting edges): 5 R (Corner radius): 0. 3 Helical Pitch: 40 Unequal tooth pitch combined with variable helical pitch for smooth running Highly polished chip space for safe chip evacuation Reinforced face for process reliable, helical diving For roughing and finishing * MADE