Solid Carbide End Mill 6mm 6x16-21x57xD6D1 (Cutting diameter): 6mm D3 (Undercut diameter): 5. 5mm L2 ( Length of cut): 16mm L3 (Length of undercut): 21mm L1 (Total length): 57mm D2 (Shank diameter): 6mm Z (Number of cutting edges): 2 Helical pitch: 38 Defined clearance angle for ideal stabilization with high cutting depths Special helical pitch for smooth running and soft cut Extra large chip chambers for an extreme chip volume For use in high speed milling machines For roughing and