Festool TSC 55 REB Li Basic 561730 Cordless Circular Saw Guide Rail Precision - the FS Guide Rail System, you'll get laser-straight, splinter-free cuts in seconds. Lay the Guide Rail b/w two points and cut Splinter-Free Cutting - Splinter guards on both sides of the blade ensure that you'll make zero tearout cuts in virtually any material Go Where the Work Is - Not only can you replace large, stationary equipment with the incredibly precise, handheld track saw system EC-TEC Motor - Brushless EC-TEC motor, robust Lithium Ion batteries, and 5,200 RPM combine to provide corded performance without the cord