ITEM NAME:300Mm 12-Inch Grit 80 Diamond Coated Flat Lap Disk Wheel Grinding Sanding D Z5Q8 300Mm 12-Inch Grit 80 Diamond Coated Flat Lap Disk Wheel Grinding Sanding D Z5Q8 4 inch outside diameter,80 Grit ,Quality electroplated diamond coated flat lap disk wheel. The flat laps wheels have a 1/2-inch arbor hole for Angle Grinder. They are absolutely flat and parallel to meet the most exacting faceting requirements. For grinding and polishing jewelry,glass,rock,stone,granite,etc. Color:silver Material:metal + diamond Size:diameter 300mm Package Contents: 1 x Diamond Disc