90%Carbide,10%Co Rod Burin Series Coating;Uncoated High speed cutting DOHER Tungsten Carbide Steel Rod BurinDOHRE Tungsten Carbide Stee Rod Burin are suitable for stainless steel,Cast lron ,mold steel,Aluminum,Copper.Mainly used for urin,wear parts. And need,please contact us any time.Thanks!