Morris Products 68166 Heavy Wall Heat Shrink Tubing, 4ft Length, 6-#2 AWG Cable Range, 0.09" Thickness, 0.75" Pre-Shrink Diameter, 0.24" Post-Shrink Diameter Heavy Wall Heat Shrink Tubing - This Heat Shrink Tubing is rated for High Voltage. 3:1 Shrink Ratio High voltage heat shrink tubing provides maximum reliability for insulating and protection of cable joints and terminations Withstands severe mechanical requirements of U.R.D., submersible and direct burial installations High impact, abrasion, corrosion and chemical resistance