The 40V max XGT® Brushless 165mmm Plunge Circular Saw (SP001GZ03) delivers precise and more accurate cutting when combined with an optional guide rail system (sold separately). The saw and rail system work together to produce accurate cuts with minimal tear-out. The saw combines a powerful Makita-built brushless motor with Automatic Speed Change™ Technology, which adjusts cutting speed and torque during the cut for optimum performance. The saw has a variable speed control dial (2,500 – 4,900 RPM), with soft start and an electric brake for added convenience. Constant speed control enables a consistent smooth finish under load. It has a large 56mm cutting capacity at 90-degrees and 38mm at 48-degrees. It has a bevel capability of -1° to 48° and positive stops at 22.5° and 45°. For improved efficiency, it is capable of wirelessly starting a connected dust management solution. Auto-start Wireless System (AWS®) utilizes Bluetooth® technology for wireless communication between the tool and dust extractor (sold separately). When the trigger of the AWS-equipped SP001GZ03 is engaged, the AWS-equipped dust extractor powers-up. When the trigger is released, the dust extractor powers-down. AWS is intelligent communication that eliminates cords and excessive noise since the dust extractor runs only when the tool is running. An AWS transmitter is needed (sold separately). XGT® is a system of equipment, tools, batteries, and chargers utilizing 40V max lithium-ion batteries. XGT® is engineered to deliver high power to take on high-demand applications, allowing users to completely transition to a cordless job site. XGT® is equipped with advanced brushless motor engineering, intelligent digital communication, and superior durability features to outpower, outsmart and outlast the rest.