Rio Grande’s new LYNX C-4 (Clean Cut Concave Cutter) bur is made of a special tungsten vanadium alloy and is suitable for all metalwork, especially platinum. The C-4 bur features a crosshair slit inside the cutter that discharges the removed metal to prevent the bur from loading. The consistent fluting on the bur head is designed to eliminate chatter and grabbing. Rio Grande, 7500 Bluewater Road N.W., Albuquerque, NM 87121-1962; (800) 545-6566 (from the United States), (800) 253-9738 (from Canada), (505) 839-3011 (from all other countries), fax (800) 965-2329, e-mail: info@riogrande.com, Web site: www.riogrande.com.