Check the listing for details. 16" inch 400mm Grit 60 Coarse Diamond coated Flat Lap Disk Grinding Disc. Condition: New. Listed at 112.00 USD. 16" inch 400mm Quality Electroplated Diamond coated Flat Lap Disk Grinding Grit 60 ( Very Coarse ) Product Specification: Outside diameter : 16" inch (400mm) Arbor hole : 1/2" (12.7mm) Thickness : 1.9 mm Grit : 60 ( Very Coarse ) Diamond coating Density : Perfectly high Diamond coating surface area : almost 97% Wet use recommended 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. 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, 150, 240, 320, 400, 500, 600, 800,1000, 1200, 1500 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. Please let us know if you are looking for other accessories or hardware. Should you have any queries, please contact me directly.