The Milwaukee® M18™ FUEL™ 21mm Random Orbital Polisher is the industry’s first cordless 21mm RO polisher, delivering the power, performance, and runtime of corded tools with the freedom of cordless operation. Powered by M18™ FUEL™ technology, this tool is built to maximize productivity for polishing and heavy correction applications.
Featuring a variable speed trigger, 8-position speed dial (2,400–4,500 RPM), and a trigger lock-on button, this polisher provides total control and maintains speed under load for consistent results. Its best-in-class clearance (over 2″ from battery to surface) reduces the risk of accidental contact and surface damage.
When paired with M18™ REDLITHIUM™ HIGH OUTPUT™ XC 6.0Ah batteries, this cordless polisher delivers the runtime professionals need to tackle even the toughest jobs. Designed with an optimized center of balance and ergonomic grip, it ensures comfort and ease of use during extended sessions.
✅ Industry’s first cordless 21mm random orbital polisher
✅ Corded performance with cordless freedom
✅ Variable speed control (2,400–4,500 RPM) with 8-position dial
✅ Trigger lock-on and variable speed trigger for precise operation
✅ Best-in-class clearance to minimize risk of surface damage
✅ Powered by M18™ REDLITHIUM™ HIGH OUTPUT™ batteries for maximum runtime
✅ Ergonomic, balanced design for user comfort during long jobs
📦 Ideal for automotive detailing, professional polishing, and heavy correction work.





| Amps | 11 |
| Cord Type | 10′ QUIK-LOK® |
| Tool Warranty | 5 Years |
| Power Source | Corded |
| Length | 16-1/2″ |
| Weight | 8.8 lbs |
| No Load RPM | 0-2,800 |
| Spindle Lock | Yes |
| Trigger Lock | On |
| Construction Type | Double Insulated |
| Spindle | 5/8″-11 |
| Dial Speed Control | Yes |
| Pad Size | 7 Inch |
| Voltage | 120V AC |