WellieSTR 12 pieces Set of 5 gram Diamond polishing lapping paste pastes compound set 0.5 - 40 microns 12 pieces Set of 5 gram Diamond Lapping Paste Polishing Compound For Sock Removal to Final Polishing For Jewelry, Gemstones, Tiles, Steel, Zinc, Aluminum Grit Sizes: 0.5micron, 1.0, 1.5, 2.5, 3.5, 5.0, 7.0, 10, 14, 20, 28 and 40 micron All of them are oil based, easy for use and avoid contamination. Best use with the wool polishers for polishing. Suitable for use on jewellery & gemstone, steel & hard metal, aluminium & zinc, all metallurgical purpose.