Cold Shrink Insulator, Medium Wall, Material EPDM Rubber, Flexible, Flame Retardant No, Adhesive Lined No, Shrink Ratio 2:1, Use With Wire Size 6 AWG to 4 AWG, I.D. Before Shrinking 0.56 in, I.D. After Shrinking 0.31 in, Wall Thickness After Shrinking...