Shrink-On Tubing Individual Cable Tubing: Tubing Type - Heat Shrink Tubing; Temperature Rating - -55 to 135 Deg C (-67 to 275 Deg F); Material - Polyolefin, Non-Lined; Shrink Ratio - 2-1; I.D. Expanded - 0.75 in (19.0 mm); I.D. Recovered - 0.37 in (9.3 mm); Color - Clear; Additional Information - Wall Thickness 0.03 in; Manufacturer Series - FIT-221