Specification: Origin: Mainland China Material: Polyolefin Shrink ratio: 2:1 (maximum shrinkage to 1/2 of its supplied diameter) Minimum shrinkage temperature: ≥84°C Complete shrinkage temperature: ≥120°C Operating temperature: -55°C to +125°C Tensile strength: 10.4 MPa Dielectric strength: 15 K Cutting method: scissors or compatible with sharp knife Flame retardant: flame retardant Color: 127Pcs: All Black 164Pcs: Colorful 328Pcs: Colorful 580Pcs: Colorful 850Pcs: Colorful Size: 120.00x100.00x20.00mm/4.72x3.94x0.79inch Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 Set x Heat Shrink Tubing 1.Environmentally Friendly: Made from biodegradable polyolefin, this electrical connection wire cable insulation sleeve demonstrates an environmental consciousness and can be safely disposed of. It minimizes environmental impact while providing effective cable protection. 2.Variety of Sizes and Quantities: With multiple size options available, this product can meet various cable management needs. Whether you have small or large cables, you can find the right size and quantity of insulation shrinkable tube to ensure proper insulation and organization. 3.Flame Retardant Safety: These sleeves possess flame retardant properties, ensuring that your cables are protected from fire hazards. In the event of a fire, the wire cable sleeve kit helps to prevent the spread of flames, increasing overall safety and reducing potential damage. 4.Wide Temperature Resistance: Designed to withstand a wide temperature range from -55°C to +125°C, this heat shrink wrapping kit maintains reliable insulation even in harsh conditions. It ensures the cables remain protected and functional in extreme temperature environments. 5.Easy Installation and Secure Fit: Heat shrink tubing is designed to shrink tightly when heated, providing a secure and tight fit around cables. This makes installation quick and hassle-free, ensuring that the tubing stays in place and offers excellent insulation and strain relief.