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 - 0.25 in 6.3 mm; I.D. Recovered - 0.12 in 3.0 mm; Color - Clear; Additional Information - Wall Thickness 0.025 in; Manufacturer Series - FIT-221