Solid Carbide End Mill 16mm 16R8x22x125xD16D1 (Cutting diameter): 16mm L2 ( Length of cut): 22mm L1 (Total length): 125mm D2 (Shank diameter): 16mm Z (Number of cutting edges): 4 R Corner radius: 8 Helical pitch: 30 Adjusted wedge angle and helical pitch for smooth running and a soft cut Reinforced face geometry with a special finishing bevel for maximum performance and surface quality Highest machining performance due to four cutting edges Radius tolerance r 2 mm: 0. 003 mm Radius tolerance r