The Festool 577039 connects guide rails as if they were made from a single piece. The two connecting pieces allow users to connect two guide rails so that they are straight and stable. The self-aligning function makes it quick and convenient to connect the guide rails. The connecting pieces are compatible with all Festool guide rails. They ensure precise cuts over the entire length of two or more connected guide rails. Features Self-aligning for a straight connection, meaning that precise results can be achieved Two connecting pieces for stably connecting two guide rails for long workpieces The laser engraving ensures that the two connecting pieces are used in the correct order With a self-aligning function for connecting two guide rails for long workpieces so that the rails are straight