Decided to post a pic of these two insulators so anyone else that may get confused at times like I have knows which is which. Even saw a long time Icon member questioned if one he was selling with a crooked mold line was or wasn't a CD 170. They are stouter and widder across the base compared to the CD 170.1. I'll let you figure witch is which in my pic. Just beware that the insulator on the left isn't a CD 133 or 134 because it has no inner skirt. I removed all of what inner skirt remained for cosmetic purposes. Boy was it ugly before my alteration!!