Stainless outer cable (with liner) flat line type Outer Casing (from Stainless); Product Description: Commonly made of iron. The coiled wire of the outer cable has been turned into stainless steel. It is characterized by its rust resistant coating in a transparent color. Inner liner is also included, so the brake lever pulls are light. You can easily dress it up and upgrade it. Stainless outer for braking and shifting. Both have inner liner, and the lever touch is light. The outer diameter is 4mm for shifting, and the inner wire is 1.2mm. Shifting is a spring-loaded (coiled type) unlike regular conduid type (straight strings). As a result, there may be a little straw cloth between the inner wire and the outer wire when using. We do our best to avoid the straw cloth as much as possible, but please be careful when using 10-11 speeds. Road Bike for Shift, For Approx. 1 Car, 6.6 ft (2 m) Roll