Milwaukee developed the worlds first cordless grinder that delivers all the power of a corded grinder. All-metal construction ensures all the strength and durability that you would expect from a corded grinder. Tool-free changes make switching cut-offs and abrasives quick and easy. POWERSTATE Brushless Motors deliver more power and run time, while increasing the life of the motor. Ergonomic design, quick accessory changes, and power and durability you'd expect from Milwaukee make their M18 cordless grinders the most advanced on the market.