TrueTrac Pro-Series 12ft KitAdapts any standard circular saw into a precision track guided cutting tool Produces chip and splinter free cuts on both sides of your blade Provides an exact line of cut reference for effortless layout and cut setup Includes a total of 153 inches of track consisting of one (1) 57 inch and two (2) 48 inch sections with dovetail connectors, allowing overhang for starting and finishing a 144 inch or 12ft long cut