The E-Z Red 158-pc Heat Shrink Set, No. HS34, offers eight different sized tubes that shrink to fit over cable splices and can be used for wire harnessing, covering, marking and bundling wires. This set can be used for automotive, marine, home, industrial, computer and many more applications. This set offers a 2:1 shrink ratio. The case also features a molded-in ruler for accurate measurement.