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