Stromberg Carlson Base Pads work great on Class A, Fifth Wheel and Travel Trailer leveling and stabilizing systems. A plastic pad is one tree root or rock away from failure. Our pad is molded rubber, which means it has memory to return to shape after each use. Can be used on landing gear feet, scissor jack bases and tongue jacks. Molded EPDM rubber will not split, shred, crack or break (evenly loaded, up to 30,000 lbs). Features: Resistant to UV, water, mold and corrosion, Easy to clean and store, Interlock Base Pads to ramp up to level, Integrated Carrying Handle, 2-Year warranty, Made in the USA!