Features: and high quality Material: Made of polyolefin, shrinkage ratio: 2:1 (will shrink to 1/2 of its original diameter) Suitable for electrical insulation, wire bundling, color coding, mechanical protection, wire/cable joints, and daily maintenance Includes 164 heat shrinkable tubes, 5 colors (yellow, blue, black, green, red), 8 specifications, to meet various needs Length: 40mm or 80mm; Diameter: 1mm, 2mm, 3mm, 4mm, 6mm, 8mm, 10mm, 14mm; Shrink ratio: 2:1 Package contains: 1 x 164PCS (8 sizes) 2:1 heat shrinkable tube Specifications: Material: Plastic Weight: 40g Size: As shown in picture Shrinkage Ratio: 2:1 Operating Temperature: -55°C to +125°C Minimum Shrinkage Temp: +70°C Full Shrinkage Temp: +110°C Maximum Tensile Strength: 10.4 MPa Dielectric Strength: 15 kV/mm Note: 1. Please allow 1-2cm errors due to manual measurement. Ensure you are comfortable with this before ordering. 2. Due to differences in monitor displays, the actual color of the item may vary from the picture. Package includes: 60Pcs 1.0x40mm (Yellow, Black, Red, Green) 30Pcs 2.0x40mm (Yellow, Black, Red, Blue) 20Pcs 3.0x40mm (Yellow, Black, Red, Green) 16Pcs 4.0x40mm (Yellow, Black, Red, Blue) 12Pcs 6.0x40mm (Yellow, Black, Red, Green) 10Pcs 8.0x80mm (Yellow, Black, Red, Blue) 8Pcs 10.0x80mm (Yellow, Black, Red, Green) 8Pcs 14.0x80mm (Yellow, Black, Red, Blue)