Milwaukee's M18 FUEL™ 4-1/2" / 5" Variable Speed Braking Angle Grinder, with Lock-On Slide Switch is the newest addition to Milwaukee's battery-powered grinder lineup, generating 11A Corded Power, 5 Speed for Increased Control, and RAPIDSTOP™ Brake for Enhanced Safety. The POWERSTATE™ Brushless Motor delivers 3,500 - 8,500 RPM and maximum sustained power to complete the toughest grinding and cutting applications, allowing you to push your cordless angle grinders harder and longer than ever before. REDLINK PLUS™ Intelligence ensures unmated levels of performance, protection, and compatibility. The M18™ REDLITHIUM™ HIGH OUTPUT™ XC6.0 Batteries (not included) deliver 50% more power while running 50% cooler than our M18™ REDLITHIUM™ XC Batteries. The Variable Speed dial provides 5-speed settings between 3,500 RPM and 8,500 RPM allowing for greater control in more applications. With tool-free accessory and guard adjustments, users will experience faster accessory changes and less downtime. The MILWAUKEE® M18 FUEL™ 4-1/2" / 5" Variable Speed Angle Grinder takes cordless tools to the next level in performance, run-time, and application versatility.