Superior RV 17012-10 RV Interlocking Leveling Blocks – 10-PackThese leveling blocks are modularly designed to not only configure to fit any leveling function, but 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. Use under single and dual wheels, under tandem axles and under jacks.Modularly Designed: Configure to fit any leveling functionMulti-Use: Can also be used as a support base for other stabilizing equipmentAdditional InfoType:InterlockingLength (IN):8.5″Width (IN):8.5″Height (IN):1.3″Quantity:Set Of 10