Reese Fifth Wheel Sliders are Used with short bed or extended cab pickups to prevent damage to cab durig spotting and right turns. Round tube design allows for smoother operation when sliding of unit is necesssary. Angeled steel rollers reduce binding during sliding. Easy to use and can be operated from either side. Travels 12" and operates even when vehicle is angeled up to 45degrees. Rail and Installation Kit sold separately (944067).