Bike Internal Cable Routing Tool Kit Compatible with 4-5.5mm Sheath, Inner Guide Installation for Bike Frame, Hydraulic Derailleur, Derailleur Cable

Facilitates wiring of 4-5.5mm cable ducts, hydraulic piping and DI2 E-Tube, works with all types of non-steel frames. Manual included. You can also refer to the video in the ad for instructions. We offer 3 adapters for installing brake hoses, shifting hoses, hydraulic hoses, internal cables, electrical cables, etc. The main magnet features a strong magnetic force that freely guides your inner cable through the frame. Note: This bike internal wiring tool does not work with steel frames. (It may cause insufficient magnetism or not when working on steel frames). And it is only suitable for frames with cable inner diameter of 6mm or more.