Our diamond grinding wheels are purposely designed for fast, efficient grinding that leaves a smooth finish. Ideal for grinding, cleaning, leveling and coating removal, our diamond grinding wheels are #30/40 grit with medium bond and fits onto angle grinders. Use it on a 5/8"-11 threaded arbor or a 7/8"-5/8" non-threaded arbor along with a variety of segment styles to tackle any construction projects on hand. Specifications: Diameter: 7 Inches Arbor: 5/8"-11 Threaded Segments: 24 Double Row Segments Grit Size: #30/40 Grit Bond Type: Medium Bond Equipment: Angle Grinders