Description: 【Premium and Reliable】: The bicycle internal cable routing tool is made of high quality aluminum alloy material, which is wear resistant, sturdy, and durable for a long serving time. 【High Performace】: Inner Guides cable reduces the sliding resistance for the lighter, quicker more effective operation 【Easy to Use】: Use the main magnet for pulling the other magnet through the bike frame tube and a flexible magnet for retrieving another magnet tip from within the frame. 【Portable and Covenience】:Comes with a carrying box, very easy to store without worrying about losing. 【Application】: Bike internal cable routing kits are suitable for threading in most bike frames, mountain bikes, road bikes, and city bikes, including cables, housing, hydraulic hose, and electronic shifting wire. Specification: Material: Aluminum Alloy Size Chart: Guide Main Magnet 4.11cmx1.2cm/1.62inchx0.47inch Traction Rope 15cm/5.91inch Guide Magnetic Rope 7.93cm/3.12inch Wire Connector 1.2cm/0.47inch Inner Cable Connector 1.55cm/0.61inch Transmission/Brake Oil Pipe Connector 1.61cm/0.63inch Quick Traction Rubber Sleeve 15.2cm/5.98inch Package Includes: 1 Guide Main Magnet 1 Traction Rope 1 Guide Magnetic Rope 1 Wire Connector 1 Inner Cable Connector 1 Transmission/Brake Oil Pipe Connector 1 Quick Traction Rubber Sleeve Note: It is Not Suitable for Iron Frame Bikes