so I went on eBay and found this heat shrink in material that was used in his video the purpose of this material is for fishing poles as a protectant it is absolutely amazing I would recommend anyone to try it out it feels great to hold in your hand and makes it protected as well. On amazon or EBay size for barrel is 28mm or 30mm bottle was 50mm it was very tight fit needed oil to help slip it on the bottle Hope you try it out.