Rounded Taper Gold Tungsten Carbide Bur, 0.50" x 0.38" dia., 3/32" Shank, Fine. Proudly made in the USA of premium tungsten carbide, each carbide bur is precision machined to the highest tolerances for a sharp precision cut and gold plated for that added appeal. “Gold” series have pointed teeth that grab for fast removal. Extremely long lasting.