Feature: 1. The heat shrink tube also has good insulation and flame retardant properties, reliable to use and have long service time. 2. Simple and safe, cover the exposed parts to be maintained with these tubes and use a heating tool to contract them to form a tight, durable seals. 3. Small size, easy to carry and easy to use, including different colors of the hear shrink tube, a total of 328pcs to meet your demands. 4. Can be used for solder joint protection, wire binding and labeling, color coding, headphone and mobile charging cable reinforcement. 5. Suitable for LED filament maintenance, remote‑controlled aircraft, vehicle maintenance, and headbands. Specification: Item Type: Heat Shrink Tube Material: Polyolefin Purpose: Can be used for solder joint protection, wire binding and labeling, color coding, headphone and mobile charging cable reinforcement, LED filament maintenance, remote?controlled aircraft, vehicle maintenance, and headbands. Inner Diameter: Approx. 1mm / 0.04in 2mm / 0.08in 3mm / 0.12in 4mm / 0.16in 6mm / 0.24in 8mm / 0.31in 10mm / 0.39in 14mm / 0.55in Color: Black, Red, Yellow, Blue, Green Shrinkage Ratio: 2:1 (to shrink the maximum to 1/2 of its provided diameter) Operating Temperature: -55°C to +125°C Minimum Shrinkage Temperature: +70°C Complete Shrinkage Temperature: Maximum +110°C Tensile Strength: 10.4 MPa Dielectric Strength: 15 kV/mm Quantity & Size: Approx. 120pcs 1 x 40mm / 0.04 x 1.57in (yellow, black, red, green) 60pcs 2 x 40mm / 0.08 x 1.57in (yellow, black, red, blue) 32pcs 3 x 40mm / 0.12 x 1.57in (yellow, black, red, green) 32pcs 4 x 40mm / 0.16 x 1.57in (yellow, black, red, blue) 32pcs 6 x 40mm / 0.24 x 1.57in (yellow, black, red, green) 20pcs 8 x 80mm / 0.31 x 3.15in (yellow, black, red, blue) 16pcs 10 x 80mm / 0.39 x 3.15in (yellow, black, red, green) 16pcs 14 x 80mm / 0.55 x 3.15in (yellow, black, red, blue). Package List: 328 x Heat Shrink Tube