•2:1 SHRINK RATIO – When heat, it will shrink up to 1/2 of original diameter，makes it possible to repair most damaged cable jackets without removing connectors. Ratio: 2:1 Operating Temperature: -55°C to + 125°C

•EASY TO USE – 1,Choose a right size of tubes, insert the wires into the tube, slip it into place after the connection is made. 2, Keep the nozzle about 2" distance from the tube, apply heat at a 45 degree angle until the tube tightly shrunk around the joint.

•WELL ORGANIZED – Comes with a plastic organizer, the tubes place in 16 separated compartments, providing an organized way to help you identify the right sizes quickly, classify easily.. 6 colors are for color coding to help identify cables such as red for power, black for ground.

•WIDELY APPLICATION - Repairing phone and headphone cables, electrical insulation, identifying wires (by the colors), organizing the messy cables/wires, lights wiring, home repair projects.