The Norton 50503-038 General Masonry 4" Diamond Grit Cup Single Row Grinding Wheel is a high-quality abrasive wheel designed for precision grinding tasks. Made with durable diamond abrasive material, this dish grinding wheel is perfect for intricate grinding and shaping of various materials. With a wheel diameter of 4 inches, this product offers stability and consistency during use. Proudly manufactured in the United States, this grinding wheel ensures top-notch craftsmanship and performance for industrial and woodworking applications.