1M 55mm Yellow PVC Shrink Tube can shrink up to 48% very quickly when applied heat. It is flame retardant and you need a very low temperature for shrinking. This shrink tube is very essential while you are wiring and need to cover any naked wire more precisely. It is more reliable insulation for your wiring. Rather than that, this can be used in different types of insulation applications like jacketing power supply, capacitor, and industrial equipment.