Roughing end mill(rougher),Din844,Din844 long,american standard. Roughing end mill(rougher) Din844,Din844 long,American standard.Material: HSS,Cobalt HSS and carbide.Coarse pitch, fine pitch, and rougher finisher.Center cutting and non-center cutting .Weldon shank or round shank.Cutting Dia: from 3mm to 50mm, 3/16"-2"