4X0EE13005RAW WS15PE AKA 6828776 is a 1/2″ Widia/Hanita VariMill Extreme High Performance Carbide Endmill 4-Flute, .015″: Corner Radius 1.0″ LOC, 3″oal, 1/2″ Weldon Shank, Parabolic Core PVD multicoated. Page 11 2021 Advances 2021 Cat. For slotting, ramping helical interpolation and trichoidal milling in all Material groups. 1 to 45 degrees helical ramping (see speed and feed charts for details).