The DHS782 is an 190mm circular saw that's powered by 2x 18v LXT lithium-ion batteries (sold separately). It features a fully brushless motor which contributes to the amazing power output and runtime, and Automatic Torque Drive Technology automatically changes the cutting speed according to load condition for optimum operation. Another key feature of this machine is that it is compatible with the Makita guide rails without the need for an adaptor - so the 1.5m 199141-8 and 1.0m rail 199140-0 This Kit Includes: DHS782z (Bare Tool 2 x 199141-8 1.5m Rails E-05664 Rail Bag 198885-7 Rail Joint Set 194385-5 Clamp kit Features Brushless motor Electric brake Soft start LED job light Automatic Torque Drive Technology: Automatically changes the cutting speed according to load .