The MILWAUKEE M18 Brushless 4-1/2 / 5 Cut-Off Grinder delivers power and runtime while maintaining a compact size. Milwaukee built and optimized the 11,000-rpm brushless motor specifically for cutting and surfacing applications. The Brushless Grinder, paired with built-in REDLINK power tool technology and REDLITHIUM batteries, efficiently delivers power and provides longer battery life, resulting in up to 80 cuts in rebar. The Brushless Grinder includes an electronic clutch for kickback protection and overload protection to maximize motor life. The 5/8-11 spindle and tool-free guard adjustments ensure faster adjustments and less downtime while fully compatible with the most common grinder accessories in the market. The compact and lightweight build allows for excellent control and comfort. The all-metal gear case ensures that the Brushless Grinder is built to last and gets the job done every time. The MILWAUKEE M18 REDLITHIUM XC5.0 Starter Kit delivers up to 2.5X more runtime, 20% more power and 2X more recharges than standard lithium-ion batteries. The lithium-ion battery pack features superior pack construction, electronics, and performance providing users more work per charge and more work over pack life than any battery on the market.