Shape and Deburr Quickly Accurately with Carbide – Carbide Burrs are preferred for accurate metal removal when shaping, leveling, porting cast iron, steel, & other ferrous metals. Double cut precision ground for vibration free operation in your 20,000-rpm die grinder. All burrs mounted on a 1-1/2″ long 1/4″ shaft. Includes 2 pc cylindrical shapes 1/2″ x 1″ & 3/8″ x 3/4″, 2 pc cylindrical radius end shapes 3/8″ x 3/4″ & 1/4″ x 5/8″, 2 pc ball shapes 1/4″ & 3/8″, 2 pc tree shaped radius end 3/8″ x 3/4″ & 1/2″ x 1″. 90 Day manufacturer’s warranty. Imported.