Cold Shrink Insulator, Medium Wall, Material EPDM Rubber, Flexible, Flame Retardant No, Adhesive Lined No, Shrink Ratio Not Rated, Use With Wire Size 500 MCM to 800 MCM, I.D. Before Shrinking 1.94 in, I.D. After Shrinking 0.95 in, Wall Thickness After Shrinking Not Applicable, Length 18 in, Shrink Tubing Properties UV Light , Color Black, Temp. Range -40 Degrees to 194 Degrees F, Package Style Individual Pieces, Dielectric Strength 1,000 V, Max. Temp. Rating 194 Degrees F