Jagwire Pro Internal Cable Routing Tool simplifies routing through a frame using magnets to guide wires, cables and housing. A clever retractable cable with flexible magnet is inserted into the receiving end of the internal frame port and guided to the exit port. The cable, wire or housing is now attached and fed back through. This tool makes a simple procedure out of a commonly time consuming job. Full kit includes adapters for inner cables, hydraulic hose, and Di2 e-Tube wires, which rest neatly inside the Jagwire tool body when not in use.