3Mâ„¢ Hookitâ„¢ Cloth Disc 900DZ cuts fast with 3M Ceramic Abrasive Grain resin-bonded to a light and flexible J-weight cloth backing. Available in 7 grades, this 5-inch disc features an open-coat design and anti-static properties, making it exceptionally well-suited for materials that tend to load. Our Hookitâ„¢ system makes for quick disc change-out and easy re-use.