Heat Shrink Breakout Boot, Number of Breakouts 4, I.D. Before Shrinking 2.35 in, I.D. After Shrinking 1 in, Breakout I.D. Before Shrinking 1 in, Breakout I.D. After Shrinking 0.35 in, Material Polyolefin, Semi Rigid, Shrink Ratio Not Applicable, Flame Retardant Yes, Length 8.5 in, Color Black, Shrink Tubing Properties Abrasion , Acid and Alkali , Temp. Range -67 Degrees to 230 Degrees F, Wall Thickness After Shrinking 0.15 in, Dielectric Strength Not Applicable