1PREMIUM WOOL MATERIAL: Made from premium wool, our wool polishing heads are ideal for grinding tools and achieving a mirror like surface on metal. 2VERSATILE USAGE: These wool polishing bits can be used for polishing surfaces of stainless steel, aluminum products, silver, gold jewelry, medical equipment, and more. 313 PIECE SET: This set includes 13 wool polishing bits in various shapes such as trapezoidal, umbrella shaped, cylindrical, bullet shaped, pointed cone, elliptical, spherical, tapered cylindrical, pointed cylindrical, round cylindrical, and flat cylindrical. 4MULTIPLE SURFACE POLISHING: The polishing head set is suitable for polishing surfaces of jadestone, emerald, glass, ceramics, and metal. 5MEET YOUR DIFFERENT NEEDS: With a variety of head shapes, our wool polishing heads cater to different polishing requirements, ensuring versatility and convenience.