Upgrade your wiring projects with this set of 350 heat shrink butt connectors. These solder seal wire connectors are a game - changer in the electrical field. They are incredibly easy to use; just grab a heat gun, and you can connect wires without the hassle of crimping tools or soldering machines. The low - heat solder and hot melt adhesive form a perfect seal, making them waterproof and insulating. Measuring 8.98 x 6.46 x 0.71 in. they are suitable for a wide range of applications, from marine to automotive and outdoor uses. The recommended heat gun temperature of 842℉/450℃ ensures a proper connection. With 350 pieces in the package, you'll have enough for multiple projects. Whether you're working on a boat, RV, or trailer, these connectors will provide a reliable and long - lasting solution for your wiring needs.