EFFICIENCY: uses a rare earth magnet that attaches directly to cables, housing, hydraulic hose, and electronic shifting wire, and can be fed directly though difficult internal setups without the need for a separately routed lead wire Jagwire's Pro Internal Routing Tool simplifies routing through a frame, using powerful magnets to safely and easily guide cables, housing, and e-shift wires. A retractable, flexible magnet can be inserted into the receiving end of an internal cable run to find the magnetic adapter and easily pull it through. Adapters for inner cables, hydraulic hose, and Di2 e-Tube wires are included. The adapters nest neatly inside tool body when not in use. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.