Review on 1/2" 55Ft XHF 3:1 Waterproof Adhesive Lined Heat Shrink Tubing Roll Marine Grade Insulation Sealing Oil-Proof Wear-Resistant Black by Eric Dubreuil

By far the best heat shrink I've ever used for automotive applications. It shrinks down and seals on a small 18ga wire and can fit around a larger 10 gauge with no problem. Fits well with red, blue, and yellow crimp connectors. As the description reads, definitely keeping a stock of this stuff in my shop!