Lot of 4 – 100 Ft 1/2″ ID (12.7mm) Black Polyolefin 2:1 Heat Shrink This product has a2:1 shrink ratio and is both UL & CSA certified at 600V @ 125 Degree Centigrade. Perfect for electrical and electronic applications it is resistant to common fluids and solvents and has a high dielectric strength. byJuly 5, 2026