900pcs Heat Shrink Tubing: There are 12 different sizes of high quality 1-13mm heat shrink tubing for you to choose, they can be used for solder joint protection, line bundling, electrical resistance etc.High Quality Material: Made from high quality thermoplastic polyolefin. This provides excellent electrical, chemical and physical properties. This flexible and strong flame retardant tubing can be used for electrical insulation, wire bundling, very lightweight and provides wire strain relief for a variety of household, commercial, industrial and military applications.Non-toxic & ECO-Friendly: Mainly used for wire connection, rust prevention and anti-corrosion protection of solder joints, protection and insulation treatment of the end of wires, harnesses, cables and electronic componentsPersonalized Protection: Our heat shrink tube has the following advantages: good electrical insulation, good sealing and corrosion resistance, high temperature resistance. It is a great way to terminate the ends of your braided sleeving, creating a professional and airtight finish.Easy to Use: Aren't you worried about your connecting cable with an electrical tip being unsightly and not secure. You can decide to shrink the tube to tightly wrap it around a joint by heating it in an oven or via a heat gun or other hot gas flow source.