Milwaukee m18 fuel 4-1/2in./5in. Grinder paddle switch, no lock is next advancement in power and performance, generating 11a corded power, fastest cutting, and delivering up to 135 cuts per charge. M18 fuel 4-1/2in./5in. Grinder generates 11a corded power allowing users to complete toughest grinding and cutting applications, all on m18 cordless system. 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. M18 fuel 4-1/2in./5in. Grinder includes an electronic clutch for kickback protection, as well as overload protection to maximize motor life. M18 redlithium high output xc6.0 batteries (not included) deliver 50% more power while running 50% cooler than or m18 redlithium xc batteries and are compatible with 200 plus tools in m18 system. With tool-free accessory and guard adjustments, users will experience faster accessory changes and less downtime while remaining fully compatible with most common accessories in market. M18 fuel 4-1/2in./5in. Grinder takes cordless grinders to next level in performance and run-time.