The FLEX-HN STD GB 3-1/2 320SC from Field Tool Supply is a specialized grinding wheel designed for fine finishing applications. With a diameter of 3-1/2 inches and a grit rating of 320, this wheel is ideal for achieving high-quality surface finishes on various materials. Made from high-quality abrasives, it offers durability and consistent performance. This tool is perfect for metalworking, woodworking, and other precision tasks, making it a valuable addition to any workshop. It complies with industry standards for safety and efficiency.