Diamond Pacific Nova Discs 1 4 20 screw Pixie Repair Parts These are designed for finishing Jool S 4600M These are designed for finishing spheres 5" on the Aqua Tall with the upper guide removed Diamond Pacific provides a highly concentrated layer of diamond in the resin Nova layer to give a lasting and fast cutting lap for professional jewelers and cabbers creating calibrated or freeform cabochons or intarsia where time and predictable materials removal is critical Using a proven general purpose grit sequence common to Diamond Pacific's machines for sanding most lapidary materials with 280 600 1200 3000 grit Nova diamond laps followed by a cerium oxide Nova Lapor your preferred lapidary polish on a canvas polishing pad to put an excellent polish on most stones