Our Furling leads are made out of ASA plastic, making them extremely UV resistant. Furthermore, due to the low coefficient of friction and robustness of ASA, these parts do not need the traditional Stainless Steel Liner through its line tunnel. Due to this, you will not experience cracks and breaks to the part as a result of UV exposure and dissimilar coefficient of thermal expansions. Resulting in a lower cost, yet still more reliable solution for your Furling Leads.