Our M18 FUEL 21mm Random Orbital Polisher Kit is the industrys first cordless 21mm RO polisher. By harnessing the power, performance, and run-time of M18 FUEL technology, this polishing tool delivers corded performance while providing you with the freedom to work anywhere. This battery-powered polisher gives you total control with its variable speed trigger, 8-position speed dial with RPM settings ranging from 2,400-4,500 RPM, trigger lock-on button, and maintains speed under load. The M18 FUEL 21mm Random Orbital Polisher frees you from cord management and the fear of surface damage with best-in-class clearance of more than 2in from the battery to the work surface. The MILWAUKEE M18 FUEL 21mm Random Orbital Polisher provides the run-time necessary to keep professionals productive during polishing and heavy correction applications when paired with M18 REDLITHIUM HIGH OUTPUT XC 6.0Ah batteries. This cordless polishing tool is easy to use and comfortable for extended periods with an optimized center of balance and ergonomic design.