Milwaukee M18 FUEL Braking Grinder (4-1/2 in./6 in.) with Paddle Switch — Tool-Only 3670-20

Powerful, cordless grinding with precision and braking

Meet the Milwaukee M18 FUEL 4-1/2 in./6 in. Braking Grinder with Paddle Switch. Built for real-world shop tasks, it runs on the M18 battery platform and uses a brushless motor to deliver efficient material removal, from rust to burrs, all without a cord getting in the way. Because it is a tool-only model, you can pair it with your preferred battery setup for the right balance of runtime and power.

Power and control you can rely on

The brushless motor provides efficient performance and longer motor life, while the braking system ensures the wheel can be slowed and stopped quickly after you release the trigger. The paddle switch design allows you to start, stop, and modulate speed with one hand, keeping your other hand on the workpiece for steady progress.

• Cordless design powered by Milwaukee M18 batteries for on-site flexibility
• Braking feature enables safer, faster restarts and improved operator control
• Paddle switch supports easy one-handed operation for precise task execution

Versatility to match your projects

With compatibility for both 4-1/2 in. and 6 in. discs, this grinder adapts to a variety of materials and applications. It shines in surface prep, rust removal, deburring, and edge refinement in metalwork, fabrication, or workshop environments.

• Dual disk size support increases workflow flexibility
• Tool-only package lets you choose the battery and charger that fit your setup
• Compact, balanced profile for comfortable handling during longer sessions

Durability, safety, and setup tips

Designed for repeated use in demanding settings, this grinder emphasizes safety and convenience. Pair with the appropriate wheel and guard, follow standard grinding practices, and keep your workspace clean and dry to maximize performance.

Note: Benefits depend on your tasks and battery choice. Explore different discs and techniques to see what works best for your workflow.