Check the listing for details. 12" inch Grit 46-2000 Diamond Grinding Discs Abrasive Flat Lap Disk Stone Tools. Color: Silver, Condition: New. Listed at 55.00 USD. 12 inch 300 mm Grit 46-2000 Diamond Grinding Disc Coated Flat Lap Disk Wheel Product Name: 12 inch Diamond Grinding Disc, 300mm Diamond Coated Grinding Wheel, Flat Lap Disk Outside diameter : 12" inch (300mm) Arbor hole : 1/2" (12.7mm) The arbor hole can be changed from 12.7 to 40mm, such as 25.4 mm(1" inch). Include a message when you check out telling me what size arbor hole you require, it’s free of charge. Thickness : 1.1-1.3mm Grit : 46-2000 (You can choose one grit from the variety of grits) Grit Type: Coarse / Medium / Fine Quantity: Only 1 Piece 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, 600, 800, 1000, 1200, 1500, 2000. Regular Air postage from China to Worldwide and takes 15-30 days delivery to your home We will send out your order within 1-2 days after payment has been received and cleared.