1. [Protect your bicycle cables from damage]: This 3 -meter slippery oil primer is specially designed to protect your bike's gear and brake cables from dirt and dust. The PVC material provides reliable, smooth, smoothly closing the inner cable, stopping moisture and pollutants to penetrate and cause damage. Reduces friction by providing a smooth, fast and sensitive gear change or braking operation. This means that you will enjoy a more precise and controlled driving even under challenging conditions. It fits smoothly into the internal cable routing system of your bike and the flexible PVC material provides easy bending and shaping around the narrow corners. Care is also a breeze, because slippery oily primer can be easily cleaned and re -lubricated to maintain optimum performance. 1.7 mm and 2.3mm inner diameters and 2.2mm and 2.9mm outer diameters, respectively, are compatible with most modern roads and mountain bikes. Make up your current bike, build a bike, this cable storage tube is an indispensable accessory.