This is a 100 ft spool of 1" ThermOsleeve BLACK Polyolefin thin wall cross-linked Heat Shrink Tubing. This product has a 2:1 shrink ratio and is both UL & CSA certified at 600V @ 125 Degree Centigrade UL File E180908.
ThermOSleeve tubing is a Polyolefin flexible heat shrinkable tubing designed for the commercial market.
Properties include flame-retardancy, resistance to common fluids and solvents as well as high dielectric strength. It is suitable for a wide range of applications, including electrical insulation, strain relief, cable bonding, color-coding and identification.