Cooksongold customer Lydia reviews the Busch Burr Twincut Concave Cup Set (989 411S) is the ultimate tool for chaton work. This three-in-one precision tool allows you to safely round off, shorten and smooth prongs in one easy step. Lydia reviewed the Busch Burr Set as part of Cooksongolds Video Review Team. Want to join, and be in with a chance to get free products to keep? Click here to learn more: http://bit.ly/12AEhmU  Show less