Solid Carbide End Mill 12mm 12R0.2x49-60x110xD12D1 (Cutting diameter): 12mm D3 (Undercut diameter): 11. 4mm L2 ( Length of cut): 49mm L3 (Length of undercut): 60mm L1 (Total length): 110mm D2 (Shank diameter): 12mm Z (Number of cutting edges): 4 R (Corner Radius): 0. 2mm Helical pitch: 38 Chip breaker for short, defined chip length Unequal tooth pitch combined with variable helical pitch for smooth running Reinforced face with 2 cutting edges to the center Ideal chip evacuation, even with high