The Gardner Bender Heat Shrink Tubing Assortment is ideal for insulating electrical wire, repairing appliance cords and covering tool handles. This tubing comes in 4 inch lengths and offers resistance to moisture, solvent and flame damage. What's Included: (4) 1/8 inch, (2) 3/16 inch and (2) 1/4 inch diameter tubesNon adhesive linedPolyoelfin shrink tubing shrinks under heat application to insulate wiring up to half its diameterAlso useful for repairing cords and covering tool handlesMakes strong rope loops and neat endsBlackShrink temperature 120 degree Celsius (250 degree Fahrenheit) to 250 degree Celsius (480 degree Fahrenheit)2:1 shrink ratio means tubing shrinks to 1/2 it's ID (inner diameter) sizeSelf-extinguishing tubing will not drip, crack or flow when heated to shrink temperatures