The set contains:
Emery Cake - This a fast cutting material that is used for heavy tarnish, carbon buildup, even light rust removal.
Tripoli Brown Rouge - An initial step if the severity of emery is not required, Use it for finishing Aluminum, White Metal, Zinc, Copper, Wood, Rubber and plastic.
White Rouge - Suited for buffing Steel, Stainless Steel, Iron and Chrome.
Red Rouge - The finest rouge of all used on precious metals and softer metals such as nickel and Pewter.