Features 1、100PCS SET: This set includes 50pcs tapered polishing head and 50pcs cylindrical polishing head, allowing for easier changing and longer using. 2、WIDE APPLICATION: Can use with grinding paste, and use in conjunction with pneumatic and electric grinder, and apply to glass, gold, metal, etc. 3、TAPERED POLISHING HEAD: The tapered grinding head is usually used for some hard objects, such as iron, copper, steel and so on. 4、CYLINDRICAL POLISHING HEAD: Cylindrical grinding head suits perfectly for soft materials, such as wood, plastic, aluminium, etc. 5、GOOD MATERIALS: The handle is made of hard alloy steel, and the head is made of wool fibre, which has good wear resistance and high efficiency. Specification Item Type: Polishing Head Main Material: Hard Alloy Steel + Wool Fibre Handle Diameter: Approx. 3mm / 0.1in Package List 50 x Cylindrical Wool Felt Polishing Head 50 x Tapered Wool Felt Polishing Head