in this video i made a quick and almost free bed cart out of scraps and some cheap casters off a harbor frieght moving cart / dolly casteres turnd out to be junk , they work but hard to change direction of all 4 at the same time by yourself so i recomend better casters or maybe trying to grease them before installing . in this vid we used it on a 6' s10 bed but i also used it later on an 8' square body c10 bed and it supported it great too but i had a hard time getting it ballanced becaue the cart was in the way of the hoist legs to get it centered