Secure vehicles with the automatic Kelley SC2000 Series surface-mounted wheel restraint. Being mounted above ground allows it to operate under the most extreme weather conditions. Because of its revolutionary design, this wheel chock doesn’t impede lift gate operation or interfere with the landing gear on pup vehicles. With maintenance-free, self-lubricated guide bearings and no mechanical drive components to wear out, it is simple to maintain, too. It also acts as a guide rail for the reversing vehicle, limiting damage to your loading dock’s seal or shelter.