Specifications:Material: wool (Head) + Metal (Shank)Diameter: 10mm/13mm/25mmShank: 3mmFeatures:1. Perfect for cleaning and polishing.2. Can be used with polishing compound to produce a smooth finish.3.Install on electric grinder to use.4. Felt polishing accessories may be used with or without polishing compound.5. Ideal for general polishing of most ferrous metals, stones, glass and ceramics.