A revolutionary patented cup bur design. The Champion Cup. has no inner blades instead it features two ‘slotted’ openings opposing each other. Outstanding smooth surface prong eliminates additional polishing procedure. No clogging. On softer metals and particularly good for platinum. Guaranteed to outlast conventional cup burs over two times. The FCC Champion Cup is the ultimate cup bur for reaching tight places and rounding prongs that are very close together because it has an extra thin wall – a setter’s favorite.