ZHLWei Diamond Coated Grinding Disc 4Inch 100mm Flat Lap Grind Wheels Sharpening Polishing Jewelry Power Abrasive 60 3000 Grit

Outer Diameter: 100mm (4") ; Arbor Hole Diameter: 16mm (5/8") ; Grit: 60#-3000# ; Package Contents:1*Polishing Grinding Disc . brand new and high quality Polishing Laps Mainly used for polishing Crystal, Agate, Jewel and Jade, and suitable to grind and polish jewelry, glass, rock, etc. Diamond coating surface area: almost 97% All our flat laps wheels have a 4inch (approx 100mm) outer diameter and 5/8inch (approx16mm) arbor hole and are intended to be mechanically clamped to a Master Lap.