Tri-Lynx 00015 Lynx Levelers - 10 Pack Lynx Recreational Vehicle Leveling Kit, 10/Pack Modular designed levelers not only configure to fit any leveling function, but they also withstand tremendous weight To use: simply set them into a pyramid shape to the desired height that the RV needs to be raised and drive onto the stack The levelers can also be used as a support base for other stabilizing equipment