Large cable collection: 5 colors (black, yellow, blue, green, red), 12 specifications, 750 wires. 12 sizes of heat shrink tubing. Length: 45mm; Diameter: 1mm/1.5mm/2mm/2.5mm/3mm/3.5mm/4mm/5mm/6mm/7mm/10mm/13mm. Heat shrink connectors: excellent flame retardant and insulating properties. Soft and elastic, low shrinkage temperature, fast shrinkage, acid and alkali resistance and anti-aging. Mainly used for wire joints, anti-rust and anti-corrosion solder joints, and protection and insulation treatment of wire ends, wiring harnesses and electronic components. Note: The data is all measured manually, please allow 1-3cm error due to light and display differences, there may be color difference, please refer to the actual item received.