Review on Dorman 85265 Black Shrink Tubing by Ruben Saunders

Tried to use it after repairing my Bose Soundsport wireless headphones. I only needed a small piece to close the hole in the wire. I've tried at least three times but I couldn't get it to shrink, in fact I found it to expand after applying heat LOLZ! I didn't have high expectations given the price but I feel like I didn't get any of it. I had to use old school tape on top.