The MILWAUKEE® M18 FUEL™ 4-1/2" / 6" Variable Speed Grinder, Paddle Switch with ONE-KEY™ is the next advancement in power and performance, generating 13A corded power, fastest cutting, and delivering up to 135 cuts per charge. The M18 FUEL™ 4-1/2" / 6" Braking Grinder generates 13A corded power allowing you to complete the toughest grinding and cutting applications, all on the M18™ Cordless System. The POWERSTATE™ Brushless Motor delivers maximum sustained power and 9,000 RPM to remove material faster and increase productivity. REDLINK PLUS™ Intelligence ensures unmatched levels of performance, protection, and compatibility. The RAPIDSTOP™ Brake provides stop times under 2 seconds with an abrasive disc. The M18 FUEL™ 4-1/2" / 6" Braking Grinder includes an electronic clutch for kickback protection, as well as overload protection to maximize motor life. Pair with the M18™ REDLITHIUM™ FORGE™ XC8.0 Battery Pack for HIGH OUTPUT™ HD12.0 power in a smaller size, and longest life vs. REDLITHIUM™ batteries. The M18 FUEL™ 4-1/2" / 6"Variable Speed Grinder, Paddle Switch with ONE-KEY™ takes cordless grinders to the next level in performance and run-time.