Spectrum recommends mounting these buffs on variable speed, rotary polishers such as the Makita 9237C or DEWALT DWP849X or on an appropriate stationary buffer. Precautions: Do not breathe dust during use. Wear appropriate safety clothing and respiratory protection. Generated dust exposure can irritate eyes and skin. Buffs will need to be raked prior to initial use. Buffs do not include center reducer plates and require the use of a self-centering safety flange set or standard end flanges in conjunction with a center reducer plate for proper mounting and safe operation.