The Magliner Posi-Step retractable underbody truck ramps make loading and unloading safe and easy. A unique Posi-Step surface provides excellent traction while allowing water, small debris, and dirt to fall through and out of the walk path. Two widths are available to fit downsized and standard truck chassis. Each ramp is conveniently shipped completely assembled for quick installation. Once installed, simply roll out the ramp and securely store it underneath the truck. These ramps also feature hook-end attachment points to prevent kick-out during use, as well as anti-rattle springs to prevent rattling and bouncing when driving. Safety locks ensure the ramp stays securely in place when stored, while the anti-theft angle stop prevents the ramp from being extended too far and reduces the risk of theft.