Hand held burnishing and polishing machines fall into two main size categories. 4" or 100mm machines, such as Finimaster Basic, PTX and EDX, usually use wheels with a 19mm keywayed holes. 5" or 120mm machines such as FiniMaster Pro, and Metabo, usually use M14 fixing. The M14 mounted wheels can also be used on many speed controlled polishers. Metal finishing from coarse stripping to mirror polishing can be efficiently achieved with these wheels.