Makita 18V LXT Cordless Lithium-Ion 6-1/2 in. Brushless Circular Saw - XSH03Z. 6-1/2 in. Saw Blade - A-85092. Battery and charger sold separately. Brushless motor delivers 5,000 RPM for faster cutting and ripping.. Automatic Speed Change technology adjusts speed and torque during operation for optimum performance. The Brushless motor eliminates carbon brushes, enabling it to run cooler and more efficiently for longer life. Extreme Protection Technology (XPT) is engineered for improved dust and water resistance for operation in harsh conditions. Efficient Brushless motor is electronically controlled to optimize battery energy use for up to 50% longer run time per charge. Equipped with Star Protection Computer Controls to protect against overloading, over-discharging and over-heating