Festool 577680 Cordless Carpentry Track saw HKC 55 18V 5.0 Ah EBI-F-Plus

Guide Rail sold separately.
Versatility: Cross-cutting with ease or ripping materials to size, HK saws are adept at all circular saw tasks while bringing a higher degree of efficiency, repeatability, accuracy, and quality of cut unlike any other circular saw before.
Repeatability: When used with FSK Guide Rails with integrated angle stops, making accurate, repeated, cuts is not only easy it is also fast thanks to the integrated retraction feature.
Efficiency: Perform practically all jobsite cutting tasks with one tool. Making repeated cuts is faster than other methods while also providing accuracy in one step.

With the Festool HKC 55 Li EBI-Plus Cordless Carpentry Saw you'll be able to perform practically all job site cutting tasks with one tool – and no cord restriction; and the battery packs now come Bluetooth enabled. Bluetooth enabled battery packs let you attach to any Festool Bluetooth®-compatible CLEANTEC (CT) Mobile Dust Extractor and start/stop it automatically when the cordless tool is switched on/off! Miter saw precision, in the size of a sidewinder? Yes, it's that good. It makes repeat cuts faster than other methods, while also providing accuracy in one step. Making exact and repeated cuts quickly and accurately anywhere without taking materials to a miter saw or sacrificing accuracy with a standard circular saw, makes this the ultimate solution for all wood processing on the jobsite. Coupled with an FSK Guide Rail with integrated angle stops, the HK saw brings a higher degree of efficiency, repeatability, accuracy, and quality of cut unlike any circular saw before. The saw's integrated retractable guard feature includes a riving knife, making cuts safer and reducing binding at the same time. The HK 55 EBI-Plus Cordless Saw has 3 saw specific guide rails available (sold separately) to accommodate a variety of cut lengths from 9.8", up to 26.3". For even longer cuts, the HK is also compatible with all existing FS Guide Rails (NOTE: The ability of the saw to lock to the guide rail is lost if FS, rather than FSK model rails are used).