Heat shrink tubing set contains 750 pieces of tubing in 12 sizes (diameter 1.0–13.0mm, length 45mm) and 5 colors for insulating solder joints and organizing wiring when building and repairing FPV drones. The material is polyolefin with flame retardant, shrink ratio is 2:1, dielectric strength 600V and operating temperature −55 °C to +125 °C.