Boasting the fastest install and removal time of any hard tonneau cover on the market, the Extang mounts in seconds without any tools. Aircraft-grade aluminum-alloy construction makes it lightweight, yet strong. Its sharp-looking, black textured finish protects against UV rays. It mounts with an easy-to-use clamping system and the clamps conveniently nest within the bed rails when not in use. WeatherTuff seals and a unique hinge design keep water out. Mounting one on your truck could improve gas mileage up to 10% while protecting the contents of your cargo bed.