1Covered Steel Wire Traction Cable: Our bike internal cable routing kit uses a covered steel wire traction cable in order to avoid scratching the paint when operating the traction cable. 2Rapid Detachable Design: For 4 to 5mm cable, oil pipe and electric wire, the bike internal cable routing kit introduces rapid traction glue sleeve and rapid detachable design, which is convenient and practical. 3Multifunctional Guide Main Magnet: The kit's guide main magnet with guide magnetic cable can solve the problem that the traction cable is difficult to be sucked out at the hole. 4Light Weight: The overall weight of the bike internal cable routing kit is light, very portable and can be carried around at any time. 5Plastic and Metal Material: Our bike internal cable wiring kit is made of plastic and metal with excellent craftsmanship.