Solid Carbide End Mill 5mm 5R2.5x9x83xD6D1 (Cutting diameter): 5mm L2 ( Length of cut): 9mm L1 (Total length): 83mm D2 (Shank diameter): 6mm Z (Number of cutting edges): 4 R Corner radius: 2. 5 Helical pitch: 40 Highest surface quality through 4 cutting edges to the center Defined tool flank for support and vibration reduction Special face geometry for optimal chip evacuation 4 cutting edges for the highest feed speeds Radius tolerance r 2 mm: 0. 003 mm Radius tolerance r > 2 mm: 0. 005 mm