The MILWAUKEE M18 FUEL 4-1/2" / 5" Grinder Slide Switch, Lock-On is the next advancement in power and performance, generating 11A corded power, fastest cutting, and delivering up to 135 cuts per charge. The M18 FUEL 4-1/2" / 5" Grinder generates 11A corded power allowing completion of the toughest grinding and cutting applications, all on the M18 cordless system. The POWERSTATE Brushless Motor delivers maximum sustained power and 8,500 RPM to remove material faster and increase productivity. REDLINK PLUS Intelligence ensures unmatched levels of performance, protection, and compatibility. The M18 FUEL 4-1/2" / 5" Grinder includes an electronic clutch for kickback protection, as well as overload protection to maximize motor life. The M18 REDLITHIUM HIGH OUTPUT XC6.0 Batteries (not included) deliver 50% more power while running 50% cooler than our M18 REDLITHIUM XC Batteries and are compatible with 200+ Tools in the M18 System. Experience faster accessory changes and less downtime with tool-free accessory and guard adjustments while remaining fully compatible with the most common accessories in the market. The M18 FUEL 4-1/2" / 5" Grinder takes cordless grinders to the next level in performance and run-time.