Solid Carbide Burrs Cone Shape Radius End 14" Shape Burrs are now for sale. Bisco stocks cylindrical, ball, egg, flame, tree, and cone shape burrs. Solid Carbide Burrs are used in high speed die grinders to quickly and accurately grind metal. Solid Carbide Burrs are USA made and distributed by Bisco of Florida available in single, bulk and wholesale quantities. Bisco sells solid carbide burrs, carbide burrs, and carbide tipped burrs. Also for sale by Bisco Solid Carbide Drills.