The UnoLiner CRS4000-RO chassis straightening bench with its 3-ton lifting capacity is a prime example of high-quality collision repair equipment. Its ergonomic bench height guarantees ease-of-use during chassis straightening, sanding, car body panel repair, bumper replacement, and regular maintenance. RO stands for roll over, which means the drive-on ramps have been omitted to save costs and space—especially useful when the bench is installed in-ground.