Material: This is not flimsy plastic, it is High-Density Polyethylene with UV inhibitors for rugged use lasting years . No stink smell like rubber dock. Each leveling block measures is 8.8" x8.8"x 1.5", weight is 12 ounces, total 7.5 Lbs
Adjustable leveling: 10 interlocking blocks stack to the desired height for customizable leveling, each block adds a full inch to stack height
Durable Structure Design: Simply set them into a pyramid shape to the required height that the RV needs to be raised and drive onto the stack , that will withstand up to 28,500lbs. Solid bottom structure prevents them from sinking on soft ground
RV leveling block can be used with single wheels, double wheels, tandem wheels, tongue jacks, 5th wheel jacks, hydraulic jacks and stabilizer jacks
Accessories: Each set comes in a zippered storage bag with handle for easy carrying, and each set comes with a secure T-handle for easy twists ,assemble and organization