Check the listing for details. 4" inch 100mm Grit 500 Diamond Grinding Disc Coated Flat Lap Disk Glass Tools. Color: Silver, Condition: New. Listed at 10.99 USD. JINGLING 4" inch Diamond Coated Flat Lap Disk Grinding Wheel Grit 500 MediumProduct Specification: Product Name: 4 inch Diamond Grinding Disc, Diamond Coated Grinding Wheel, Flat Lap DiskOutside diameter : 4" inch (100mm)Arbor hole : 5/8" (16mm)Thickness : 1.1 mmGrit : 500 Grit type: MediumDiamond coating Density : Perfectly highDiamond coating surface area : almost 90%, only one side is coated diamondTotal Quantity: 1 PieceWet use recommendedThese diamond discs are one of the finest discs manufactured for Hobby, Lapidary, Glass applicationsSuitable to grinding gemstone, jewelry, glass, rock, ceramic, carving knife, etc.The diameter flat lap wheels have a high density quality diamond coatingThey 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 5/8" arbor hole for Angle Grinder. 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. Please let us know if you are looking for other accessories or hardware