8 Inch Diamond Sanding Grinding Disc,Diamond Coated Flat Lap Disk Polishing Grinding Disc Grit 60-3000 for Gemstone Stone Glass Crystals

Diameter: 8 inch / 200mm
Grit:60-3000
Arbor hole: 1/2"  /  12.7mm
Thickness: 0.04" /1 mm 
Material: 45# Steel+Diamond
Surface treatment: diamond coating
Style: Only one side is set with diamonds.
Packing content: 1 Piece Diamond Sanding Grinding Disc