PFERD Carbide Burr, Premium Grade, Series: High Performance Line, 1/2 in Diameter Head, 1 in Length of Cut, 2-3/4 in Overall Length, End Cut End, Cylindrical Head Shape, Aluminum Cut, 1/4 in Shank Diameter, 1-3/4 in Shank Length, Tungsten Carbide Head, HC-NFE Black-Gray Head Coating, 30000 rpm Maximum, Applicable Materials: Aluminum, Non-Ferrous Metals and Plastics, Industry Specification: SB-5