Single wall heat shrink tubing assortment. Provides electrical insulation over splices and terminations. Excellent for bundling and cable identification. 2 to 1 shrink ratio. Temperature range -55 degrees C to 135 degrees C -67 degrees F to 275 degrees F. Color coded, no sealant. Contains 3 each: 20-18 gauge - I.D. shrinks from .187" to .093", 16-14 gauge - I.D. shrinks from .250" to .125", 12-10 gauge - I.D. shrinks from .375" to .188".