Stromberg 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. The Stromberg Pad is made of 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• Resistant to UV, water, mold, and corrosion• Provides reliable support for your RV on any surface• Easy to clean and store• Interlock stacks of Base Pads to ramp up to level• Made in the USA• Size: 6" x 9" x 5/8"• 4 per pack Will not split, shred, crack, or break Provides reliable support for your RV on any surface Interlock stacks of Base Pads to ramp up to level | Stromberg Carlson Stromberg Base Pads, 6" x 9" x 5/8", 4-Pack Made in USA