Makita XSR01Z 36V (18V X2) LXT® Brushless Rear Handle 7-1/4 Multicolor. Blade Material: High Speed Steel. Powered by two LXT batteries; X2 LXT technology delivers more power, speed and run time without the hassles of a cord. Makita built electronically controlled BL Motor delivers 5,100 RPM for maximum performance and 50% longer run time per charge. The BL Brushless Motor eliminates carbon brushes, enabling the BL Motor to run cooler and more efficiently for longer life. Automatic Speed Change technology adjusts cutting speed and torque during cut for optimum performance. X2 LXT technology delivers up to 558 cross-cuts per charge in 2×4 SPF lumber and up to 291 cross-cuts per charge in 2×10 SPF lumber using two 5.0Ah batteries (batteries not included).