Makita delivers corded grinding performance without the cord with the 18-Volt LXT Lithium-Ion Brushless 4-1/2 in. / 5 Cut-Off/Angle Grinder with Electric Brake and AWS (tool only, battery and charger sold separately). It's powered by a Makita brushless motor for longer run time, increased power and speed, and longer tool life. For the most demanding applications, Makita exclusive Automatic Speed Change technology automatically adjusts speed and torque during operation for optimal performance.