Features 1、PREMIUM WOOL MATERIAL: Made from premium wool, our wool polishing heads are ideal for grinding tools and achieving a mirror like surface on metal. 2、VERSATILE USAGE: These wool polishing bits can be used for polishing surfaces of stainless steel, aluminum products, silver, gold jewelry, medical equipment, and more. 3、13 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. 4、MULTIPLE SURFACE POLISHING: The polishing head set is suitable for polishing surfaces of jadestone, emerald, glass, ceramics, and metal. 5、MEET YOUR DIFFERENT NEEDS: With a variety of head shapes, our wool polishing heads cater to different polishing requirements, ensuring versatility and convenience. Specification Item Type: Wool Grinding Head Set Material: Wool Rod: Approx. 3mm / 0.12in Package List 13 x Wool Grinding Head 1 x Storage Box