Joe Dandy Disk - 7/8 D/C Cup 1300310Joe Dandy Type Discs Cup Double Cutting 7 8 (22. 2mm) The Joe Dandy Type Discs are made of pure rubber bonded silicon carbide abrasive in a special binder. They are used for fast, cool cutting and finishing on porcelain, acrylic, gold, alloys and other materials. These discs come in various sizes along with Flat Double Cutting, Flat Safe Sided, Cup Double Cutting, Cup Outside Cutting and Cup Inside Cutting. Features: Made of rubber bonded silicon