Features 1、CONVENIENT STORAGE: Comes with 12 pre installed stone grinding heads and a storage box for easy carrying and storage, meeting your replacement needs in daily life. 2、DURABLE MATERIAL: The grinding bit is made of premium material, with high hardness, good wear resistance, uniform particles, and long lasting durability. 3、VARIOUS SHAPES DESIGN: Comes with 12 different grinding head shapes to meet all grinding needs, can also sharpen hard materials. 4、WIDE APPLICATION: These polishing bit set is suitable for polishing and grinding various objects such as stones, glass, metal, stainless steel, ceramics, etc., leaving a cleaner and brighter surface after polishing. 5、ABUNDANT QUANTITY AND SIZE: Comes with 12 grinding head drill bits, each with exquisite shape; the size of these abrasive polishing drill bits varies. Specification Item Type: Wool Grinding Head Set Material: Wool, Stainless Steel, Sandstone Package List 12 x Wool Grinding Head 1 x Storage Box