3" Mini Flap Disc Ceramic Pro Type R 100 Grit - 11666 PROFESSIONAL SERIES - CERAMIC GRAIN WITH GRINDING AID & SELF-SHARPENING ACTION - FOR STAINLESS, METAL & NICKEL ALLOYS BENEFITS & INFORMATION Ceramic flap discs out perform traditional zirconia flap discs by 50% on stainless steel, carbon steel alloys and exotic metals. They require less pressure for higher stock removal, last longer and reduce downtime for disc change over. Price shown is per piece. Sold in box quantity listed below. Final cost reflected in shopping cart.