Carolina Tape (8301C01AUG) Black 1-1/2" Width x 30' Cap Tape Black cap tape with Mylar backing has closed cell PVC foam (with adhesive on one side) is used between the truck body and cap (topper) Seals out water, weather, dust, rattles and vibrations Also functions as an all-purpose weather-stripping 1-1/2 Inch Width x 30 feet