* Package includes 580 pcs heat shrink tube in black color and 11 different sizes, all packed in a plastic case for easy storage. * Bates heat shrink tubing kit recovers to 1/2 of its original diameter and makes a tight seal; when the temperature reaches 212 ℉, the glue inside will soften and seal the connection. * You can just shrink heat shrink tubing with a lighter when you don’t have a heat gun at hand. The heat shrink tubes are all pre-cut into the most common sizes you‘ll need, making your work a lot faster. * The adhesive seals the connection when heat is applied, creating waterproof and long-lasting insulation. After applying the heat, the tube remains flexible. * Bates heat shrink tubing kit is suitable for electrical insulation, corrosion protection of solder joints, wire bundling, color coding, mechanical protection, wire or cable joints, headphones, and phone cables.