Magnetic tool that aids internal cable routing by guiding cables through the frame. Kit includes four individual steel adapters, a lead wire and flexible extension. Compatible with cables, housings / hoses and wires.Connect one end of the adapter to lead wire, the other end to a cable, Shimano Di2 Wire, or a housing. Build-in awl helps restore cut housing ends for better attachment with adapter, and easier cable insertion. The hose to hose adapter connects between an old hose and a new one. Key Features: Magnetic tool that assists internal routing by guiding adapters through the frame., Built-in awl helps restore cut housing ends for easier attachment with adapter and cable insertion., Contents include 4 x individual adapters, a lead wire and a flexible magnetic extension., Compatible with cables, housings/hoses and wires., Fabric covered tip protects frame from scratches. .