The bicycle housing is made of new material, which is heat-resistant, anti-oxidation, and durable; the high-strength and high-toughness steel wire cable can provide greater force and operation, and is not easy to break. length: Rear: 1.7m, Front: 1m. Please measure your size before purchasing. You can install it easily without others. The black housing kit is suitable for throttle cables on mountain bikes, road bikes, regular bikes and karts. Please make you select the correct model. 6 pairs of front and rear brake cables. After long-term use, you only need to apply a small amount of butter or lubricating oil on the steel wire to the sensitivity of the brake at all times. Colour:black Material:steel wire Package Contents: 6set of bicycle brake line