It sounds like there are some struts hidden somewhere around the ... What do you think about the tonneau cover? Let us know in the comments section below.

The lockable cover secures cargo and features gas struts for easy opening and closing. It also has a quick-release mechanism so you can take off the tonneau whenever you need to. GM Accessories ...

The hinged design of this type of tonneau cover provides great ease of use. The cab end hinges for easy access while the struts secure the hard shell. It can also augment fuel economy by keeping ...

What makes this tonneau even more convenient than its fiberglass counterparts is simple removal and storage. One person is able to unsnap the gas struts, pull two small pins, and lift the cover off.

Tonneau bed covers are a popular truck accessory because ... A built-in keyed lock allows for an extra degree of security, and two large struts help raise it into an open position.