The Companion Slider utilizes the BW Turnoverball under-bed mounting system (Sold Separately, does not work with all turnoverballs, check your fit). 12" of movement, for turning and maneuvering clearance in shortbed trucks. Automatically latches in both directions- only get out of the truck once to move into maneuvering position. Three vertical adjustments, 17", 18", 19". Fully articulating coupler head allows front to back and side to side pivoting.