tungsten carbide roughing end mills Three quality :HRC 45 ,HRC 55, HRC 60 , D6-D20 mm, helix angle: 35,3 flute/ 4 flute For roughing machine the specifications (Order No)CuttingFluteShankA.0.LdlDL6.0×15×6D×50L×4F6156507.0×16×8D×60L×4F7168608.0 ×20×8D×60L×4F8209 ×20×10D×75L×4F 920107510×25×10D×75L×4F102511×25×12D×75L×4F11251212×30×12D×75L×4F123014×35×14D×100L×4F14351410016×40×16D×100L×4F16401618×45×18D×100L×4F18401820×45×20D×100L×4F204520