Features: Brand new and high quality. For dry grinding and wet grinding. Applicable models: grinding machine polisher, angle grinder, etc. Cutting objects: stone grinding, asphalt grinding, ceramic grinding, etc. Vibration-free designs greatly reduce operator fatigue, more productive than conventional abrasives. Double sanding edge (5mm block segment), smoother chip removal, sharper cutting, longer service life. Specification: Color: black Outer diameter: 180mm (24 segments) Inner diameters: 22.23mm / 0.88 inch Block Segment Thickness: 5mm Package Content: 1 x Diamond Grinding Disc