ZFE 12Pcs 5 Gram Metal Polishing Compound Diamond Polishing Lapping Paste Compound Syringes 0.5 to 40 Micron for Metal Jewelers Polishing (12Pcs 5 Gram Metal Polishing Compound) 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. Oil based, easy for use and avoid contamination. Best use with the wool polishers for polishing. Suitable for use on jewelry & gemstone, steel & hard metal,aluminium & zinc, all metallurgical purpose. 0.5 Micron - Final Polish,1.0 Micron - Mirror finish,1.5 Micron - Mirror finish,2.5 Micron - Mirror finish,3.5 Micron - Fine Polish,5.0 Micron - Fine Polish,7.0 Micron - Pre Polish, fine lapping,10 Micron - Lapping metals,14 Micron - Stock Removal or lapping metals,20 Micron - Stock Removal or lapping metals,28 Micron - Medium fast lapping,40 Micron - Fast lapping or stock removal carbide Use it on jewelry & gemstone, steel & hard metal, aluminium & zinc, all metallurgical purposes. Its oil based and easy to use.