These 2 insulators were sold to me as CD 102s. But the one is noticeably wider than the other, and I'm wondering if the one on the left is a 102 and the one on the right a 101. I don't normally collect these CD numbers, but I was buying one other insulator from the person and figured I might as well buy a couple of more since the shipping cost would be the same for one or three. I know that a lot of styles have big variations in the size of insulators from different molds, and these two styles seem very similar from the description in the price guide. So I was wondering if someone can tell me a good way to tell the two styles apart.