These insulators were never intended for use and were made as solid pour commemoratives only. They were made in only 4 colours and in very small runs of 18 each colour. I have one of the black amethyst ones. These are full size solid pours using the original ARMSTRONG's production mould with the base skirt embossing visible around the skirt, but weak. Deep rich cobalt blue and mint condition. Here's ICON's opportunity to own a sneaky tough cobalt commemmorative that will likely not come available again for a long time. How many have been seen on ICON lately? $165 delivered.