Color Compounds: Color compounds are intended for buffing metals/plastics where the work surface is in good condition. Tripoli Compound: One of the oldest and most widely used buffing compounds. Used for cutting down and bringing out a high luster on non-ferrous metals - contains natural abrasive - fast cutting action on all types of Zinc die casting brass, copperplate aluminum casting and stamping. Greasy grade/ Quick cut - drier grease, mild cut, bright finish. Use with spiral sewed full disc or bias buff.