Great tool to have in the bed of the truck. Was looking for one of these locally but finally went to Amazon and got one. It's easier to use than some would have you believe. Jeeze, if you own a pickup you can use a ratchet bar... no?  It's quick and easy. Simply slide the bar out to reach the sides, ratchet the handle to make it tight, and then fold the handle down, or leave it up. The locking device allows the handle to fold down or to open up fully and unlock the bar.  It's not rocket science. It will keep boxes or bags by the cab or by the tailgate. I use it near the tailegate since I had to cut up my 2x8 that was used for this purpose. This is easier than the 2x8 for obvious reasons.