The Jagwire Pro Internal Routing Tool simplifies cable routing through the frame and uses strong magnets to safely and easily route cables, bowden and electrical shift wires. A retractable flexible magnet can be inserted into the input end of the inner cable lead, which will find the magnetic adapter and easily pull it through. Adapters for internal cables, hydraulic hose and Di2 e-Tube wires are included. When not in use, the adapters are neatly stored in the tool body.