Features 1、Size: Each leveling block measures 8.5 x 8.5 x 1.3in. Stack the leveling blocks to the required height for custom leveling; Each square can add an inch to the height of the stack. 2、Nonslip Design: These Camper Leveler blocks are made of quality material and are durable. Both the surface and bottom have a nonslip design to protect the tire from sliding. 3、Easy storage: A storage bag is included with the package. When not in use, it can be put in a zipper storage bag with a handle, which is easy to carry. 4、Instructions: Simply set the leveling block to a pyramid shape, depending on your needs, to the height needed for the RV to be raised and driven onto the stack. 5、Wide Application: Camping Leveling Block is suitable for car RV trailer caravan single wheel and two wheel leveling. Specification Item Type: Camper Leveling Blocks Material: ABS, metal Quantity: 10 Features: Camping leveling block, suitable for single and double wheel leveling; Can be used with single wheel, double wheel, double wheel, tongue jack, fifth wheel jack, hydraulic jack and stabilizer jack Application: Fit for Car RV caravan trailer etc Package List 10 x Leveling Blocks 1 x Storage Bag