> Multiple sizes: There are 8 different sizes of high quality 1-10mm heat shrink tubing to choose from, which can be used for solder joint protection, circuit bundling, resistors. Etc.HIGH QUALITY MATERIAL: Made of high quality thermoplastic polyolefin. This provides excellent electrical, chemical and physical properties. This flexible, durable flame retardant tubing can be used for electrical insulation. The extremely lightweight wire bundling provides wire strain relief for a variety of household, commercial, industrial and military applications. [Non-toxic and environmentally friendly]: Mainly used for wire connection, corrosion protection of anti-rust and anti-corrosion solder joints, protection and insulation treatment of ends of wires and cable harnesses, Cables and electronic componentsCustomized Protection: Our heat shrink tubing has the advantages of good electrical insulation, good sealing, corrosion resistance and high temperature resistance. This is a great way to finish off the braided sleeve for a professional, airtight finish. Easy to use: Don't you worry that the connection cable with electric tip is uncomfortable and dangerous. You may decide to shrink the pipe by applying heat and wrapping it tightly around the joint. In the oven or with a heat gun or other source of hot air flow. Retractable thermal jackets are ideal for solder joint protection, line bundling, resistor protection, etc. And has the following features Specifications: Material: Polyolefin Diameter: 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm Flammability: flame retardant Operating temperature: -55C - +125C Minimum shrinkage temperature: +70C Total shrinkage temperature: +110C Shrink ratio:2:1 Tensile Strength: 10.4 MPa Dielectric Strength: 15KV/mm Product parameters: Package including 150pcs x 1.0 x 40mm 120pcs x 2 .0 x 40 mm Package including 100 pieces x 3.0 x 40 mm 90 pieces x 4.0 x 40 mm Package including 60 pieces x 5.0 x 40 mm Package including 45 pcs x 6.0 x 40 mm Package including 30 pcs x 8.0 x 40 mm 30 pcs x 10.0 x 40 mm Package includes: Package including 625 heat shrink tubing. 1 storage box