CeraGloss wheels by Edenta are produced with a patented ceramic technology that gives outstanding polishing results without polishing pastes or compounds. The color-coded CeraGloss wheels, when used in successive order of Coarse/Green, Medium/Blue and Fine/Yellow, will provide a high-polish, high-gloss finish that gives a brilliant and reflective appearance. CeraGloss wheels are ideal for working on stainless steel, steel, palladium, platinum, titanium, ceramic, and gemstones. The Coarse/Green wheel (145-1391) is a pre-polisher, ideal for smoothing down rough surfaces and light material removal. Then use the Medium/Blue wheel (145-1392) as a general finisher, ideal for scratch removal. You will obtain the final high-gloss mirror finish when you end by using the Yellow/Fine wheel (145-1393). These wheels are also sold in a convenient set of 3, one of each grade. See related products. CeraGloss wheels measure 25mm X 2.5mm (1” X 0.10”) and are mounted on a 2.35mm (3/32”) shank. Overall length is 50mm (2”). Max RPM is 5,000. Made in Switzerland.