PACIFIC ABRASIVES introduces two new Micro-Fiber reinforced separating discs for alloys, porcelain and zirconia. Both discs are ultra-thin: 22mm. x 0.3mm. The AF disc is aluminum oxide and used for alloys. The SF is silicone carbide and used for porcelain and zirconia. Also available: 100% silicone carbide polishers in various grits and shapes for porcelain, gold and non-precious metals. 800-999-5255, 425-788-7433