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Diamond cup wheels are diamond tools bonded with metal and diamond segments welded along a pressed metal wheel body, which appears in a cup shape. These cup wheels are suitable for breaking down heavy building materials like concrete, granite, and marble. Brand: Jenex Features: Diamond Grinding Cup Wheel 4” Consumable Accessory for common Angle Grinders for used in grinding through concrete, stones, tiles, marble and granite. Application: Concrete and other masonry surfaces. Stones, Granites, Ceramic tiles and similar materials. Dimensions: diameter (4inch) 100mm diamter x 20mm body depth x 4.9mm thickness Material: Steel with diamond bits