The world's first cordless grinder delivers the power of a corded grinder with up to 2X more runtime and up to 10X longer motor life. The M18 FUEL 4-1/2 in/5 in grinder supplies maximum sustained power to complete the toughest grinding, surface preparation and cutting applications. The POWERSTATE brushless motor provides up to 10X longer motor life and lower cost of ownership. The M18 REDLITHIUM XC5.0 battery pack delivers up to 4X more runtime and 20% more power. The grinder features REDLINK PLUS intelligence, the most advanced system of cordless power tool electronics, for maximum performance. The 18 V Lithium-Ion grinder's thin body design gives it optimized balance to rest easily in your hands. Tool-free accessory changes and guard adjustments mean less downtime during work. The grinder is built with the same tool body, gearing system and anti-vibration side handle as Milwaukee's legendary high-performance corded grinders for maximum durability on the job. Includes an M18 REDLITHIUM XC5.0 extended capacity battery pack and a carrying case. Grinding wheel sold separately.