Grobet Polishing Kit Set consists of five GrobetLUX polishing compounds and two Chemkote buffs, 4x40 and 6x60. GrobetLUX polishing Compounds are a selet grade of abrasives that are uniformly blended to guarantee results. These compounds have special featurs that allow good adhesion to the fibers of brushes, buffs or felts. Chemkote treated yellow muslin buffs helps to remove surface scratches. Free Shipping!!! Used by Professional Jewelers