This internal cable management tool kit for bicycles provides efficient installation of brake cables in the internal routing frame. Made of aluminum alloy and stainless steel, it features guides that fit on the frame, providing robust compatibility and long service life. Ideal for use in bike assembly, routine tuning, or converting external cables into internal routing systems to achieve an aerodynamic look on modern frames. Designed for cycling enthusiasts and riders who regularly perform brake system maintenance or upgrades on road, mountain or hybrid bikes. Remember to avoid leaks after installation and note that this tool is not suitable for steel frames to maintain optimal functionality.