I want to make a real hore tail extension, and I'm trying to figure out what kind of glue is normally used to make them, and even more importantly what the black wrapping is on the top of the extension. It looks like some kind of shrink tape or something, but seems thinner and more pliable than most shrink tape. I've tried using shrink tubing and it's too thin and it does not have adhesive so it's difficult to work with if it does not adhere to itself. Any Quarter Horse people who are familiar with extension construction, I would greatly appreciate your help. I already bought the (expensive!) hair and don't want it to look jumky. Thank you!!