100FT 3/16" BLUE HEAT SHRINK TUBING 2:1 Shrink Ratio Flexible Polyolefin Rated up to 600V, Operating Temperature -55C to 125C UL File Number E180908 Certifications and Approvals, UL, CUL, RoHS, Halogen Free, Flame Retardant, UL224, REACH, VW-1