Extang 27630 Roll-Top Black Tonneau Cover Extang engineered roll-top style tonneau for the fastest, easiest access Heavy duty luggage style buckles are used to securely strap and snap the tarp at the cab rail WeatherTuff seals provide excellent sealing with high molecular weight PVC seals that withstand high temperatures and UV rays Extang's TuffKlamps allow fast and secure installations with no drilling or damage to your truck Uses industrial style, aggressive high peel strength velcro and fast simple D.I.Y. installation