Check the listing for details. 8'' inch Diamond Flat Lap Disc 180 Grit Lapidary Grinding Disk for Jewelry Tools. Condition: New. Listed at 20.90 USD. 8'' inch Electroplated Diamond Coated Flat Lap Disk Grinding Disc Grit 180 Medium Product Name: 8'' inch Diamond grinding disc, Abrasive Wheels Discs, Diamond disc, Diamond Disks, Diamond Grit Flat, Diamond Lapping Disc, Diamond Lap Wheel. Outside diameter:200mm (close to 8" inch) Arbor hole:12.7mm (close to 1/2" ) Thickness:about 1.4 mm Grit:180 (Medium) Diamond coating Density : Perfectly high Diamond coating surface area : almost 95%,only one side is coated diamond Wet use recommended Suitable to grinding gemstone, jewelry, glass, rock, carving knife, 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. Quick Tips 1. Recommended for rough and fine grinding on faceting material plus general lapidary grinding when precision is required. 2. All our flat laps wheels have a 1/2" arbor hole and are intended to be mechanically clamped to a Master Lap. 3. The laps are made with 1mm thick steel plate that has been machined true and flat. The lap is stiff enough to be used as is, but we recommend With The Use Of Aluminum master lap. Also Available in Grits 60, 80, 100, 120, 150, 180, 240, 320, 400, 500, 600, 800,1000, 1200, 1500, 1800, 2000, 3000. We will send out your order within 1-2 days after payment has been received and cleared. Welcome to Visit My eBay Store: Jewelry Tools 1