ITEM NAME:150Pcs 100mm 2:1 Heat Shrink Tubing Polyolefin Transparent Tube Sleeving Set Fh.It has a 2:1 shrink ratio and is both UL & CSA certified for up to 600V @125 Degree Centigrade. Color: Transparent. Set Includes Full Shrinkage Temp : +110Â °C maximum.