Shrink tube pigtail labels are excellent for defining your connectors from your controller. Just slide it in, apply heat, and it shrinks to wrap it tightly. it will be a straightforward way to quickly identify pigtail output # and the voltage of the pigtail it is attached to. Comes in five different colors: yellow, red, blue, green, and white. This allows you to use different colors to create a color scheme that fits your layout. We can also create custom labels for an additional fee