MAKITA XSH03Z 18V LXT Lithium. Ion Brushless Cordless 6. 1/2 Circular Saw, Tool Only. The XSH03Z is equipped with Automatic Speed Change Technology, which adjusts speed and torque during operation for optimum performance. The Makita BL Brushless Motor is engineered for longer run time, increased power and speed, and longer tool life. Ask all Questions, Thanks for Looking!