Our 4'' 100mm Diamond Grinding Stone Cup Wheel is the perfect tool for grinding and polishing granite and marble surfaces. Featuring an aluminum-based grinding disc, this cup wheel is designed for high-performance and long-lasting use. As a factory, we take pride in producing high-quality products that meet the needs of our customers. Whether you are a professional contractor, or a DIY enthusiast, our cup wheel will help you achieve a flawless finish on your precious surfaces. Trust us to provide you with the best products at competitive prices.