4mm lined end cap for gear (non braided) housing. Lined end caps have an internal sleeve that extends out from the end. This liner protects the inner cable from the opening in the end cap, preventing cable coatings from wearing off and ensuring the lowest possible friction. Lined end caps can also be paired with a sealing liner or a dirt guard to keep dirt and grime out of the housing. Use lined end caps whenever you use Teflon®-coated cables to protect the coating.