The Milwaukee® M18 FUEL™ 4-1/2″–7″ Variable Speed Braking Grinder with Paddle Switch and ONE-KEY™ is the latest evolution in cordless grinding technology, delivering 13A corded power with advanced safety and control features.
Powered by the POWERSTATE™ Brushless Motor, it generates 5,000–8,400 RPM and maximum sustained power to take on the toughest grinding and cutting applications, giving pros the ability to push cordless grinders harder and longer than ever.
✅ 13A Corded Power – unmatched grinding and cutting capability in a cordless solution.
✅ Variable Speed Control – 4 settings between 5,000–8,400 RPM for ultimate precision.
✅ RAPIDSTOP™ Brake – enhances safety by stopping wheels in under 2 seconds.
✅ POWERSTATE™ Brushless Motor – maximum performance and longer tool life.
✅ REDLINK PLUS™ Intelligence – advanced protection from overload, overheating, and over-discharge.
✅ M18™ REDLITHIUM™ FORGE™ 8.0 Battery Pack – more cuts per charge, longer runtime, and optimized performance in every application.
✅ ONE-KEY™ Integration – customize, track, and manage your tool digitally for added control and security.
💪 The M18 FUEL™ 4-1/2″–7″ Variable Speed Braking Grinder combines raw power, runtime, safety, and smart connectivity, setting a new standard for cordless grinders and redefining application versatility on the jobsite.




| Power Source | Cordless |
| Motor Type | POWERSTATE Brushless |
| Handle Type | Barrel Grip |
| Material Composition | Glass Filled Nylon | Aluminum |
| Material Application | Cutting | Grinding |
| Length | 15 in |
| Weight | 6 lb |
| Height | 4.5 in |
| Width | 3 in |
| Badge Branding | FUEL™ |
| OneKey Compatible | Yes |
| Fuel | Yes |
| Brushless | Yes |
| Battery System | M18 |
| Brake | Yes |
| Switch Type | Paddle Switch |
INCLUDES
(1) M18 FUEL™ 4-1/2″-7″ Variable Speed Braking Grinder, Paddle Switch w/ ONE-KEY™(3674-20)