 Gold Line is premium blend plastic. The start of the mix has been the same brand plastics used in Opto Line but added a different polymer to give it better grip without losing the excellent durability of Opto Line. |  Opto line is made out of some of the world’s most durable plastics. It comes in a variety of beautiful transluscent colors. The Opto Line plastic has been developed to withstand severe punishment and extreme conditions better than other plastics. |