HellermannTyton Heat Shrink Tubing, Type TFN21-9.5/4.8 Flexible Non-Adhesive, 600 V AC, 3/8 in Inner Dia Expanded, 0.188 in Inner Dia Recovered, Thin Wall, 0.024 in Wall Thickness Recovered, 2:1 Shrink, 50 ft Length, -67 to 275 deg F, 212 deg F Shrink, Cross Linked Polyolefin, Black