NeoBurrĀ® CrownKingĀ® 856-018 Round End Taper Carbide Bur by Microcopy (USA). Engineered from a single piece of solid tungsten carbide with a gold-plated shank and an extended 8.0 mm 6-blade cutting head, designed for high-efficiency bulk crown and bridge preparations, broad chamfer margin definition, and rapid crown sectioning.