Product informationHarmless heat shrink tubing Soft and flexible heat shrink tubing Soft and flexible, low shrinkage temperature, fast shrinkage, acid and alkali resistance, anti-aging. Product applications Mainly used in wire connection, rust prevention and corrosion protection of solder joints, protection and insulation treatment of wire ends, wiring harnesses and electronic components. How to use? Select the appropriate size. Insert the wires into the heat shrink tubing. Use the heat gun or a lighter to shrink the tube. Do not touch the tube until it is completely cooled. Note: Keep a distance of about 1/2 inch when using the lighter to shrink the tube, otherwise it may leave a black mark on the tube.