Check the listing for details. 12" inch No Hole Diamond Grinding Disc Grit 80 Flat Lap Disk Abrasive Wheel. Condition: New. Listed at 59.90 USD. No Center Hole 12" inch 300mm Electroplated Diamond Coated Flat Lap Disk Grinding Wheel Grit 80 Coarse Product Specification: Outside diameter ：12 inch（300mm） Arbor hole : No center hole, and completed filled with diamond including center position. Thickness :2mm Grit : 80 (Very Coarse) Diamond coating Density : Perfectly high Diamond coating surface area : almost 97% Wet use recommended Because of the non-standard products, we need to specially arrange production. Suitable to grind and polish jewelry, glass, rock, etc… These diamond discs are one of the finest discs manufactured for Hobby, Lapidary, Glass applications The diameter flat lap wheels have a high density quality diamond coating. They are absolutely flat and parallel to meet the most exacting faceting requirements. Installation Recommendations Following three steps to complete the installation of the diamond flat disk. Step 1. Sanded and cleaned the back of the disc firstly. Step 2. Used industrial strength self adhesive Velcro strips 2 inch strips. Step 3. Trimmed to the shape of the disc, then applied velcro to the machine base, it will works good. Quick Tips Recommended for rough and fine grinding on faceting material plus general lapidary grinding when precision is required. Also Available in Grits 80, 120, 180, 240, 320, 400, 600, 800, 1000,1200 We will send out your order within 1-2 days after payment has been received and cleared. Welcome Visit My eBay Store: Zhou Zhou tools