MaterialThis Square Lifting Pads are made of PP materal, which is sturdy, high hardness, and reliablefor your vehicle maintenance needs. non-deformable with long service lifeShock Absorption and Noise ReductionJack Stand Pads are good , strong load capacity,play a good cushioning and shock absorption. Tough and strong enough to support your car, while soft enough to resist the pressure of jack standsEasy to UsePlace Jack Pad Adapters in the between the jack's lift arm and the vehicle skirt, and just align its jack and the car frame rail. They are very strong bearing capacity, do not worry about the strong pressure will be deformed and broken. Removal is also simple and quick, soft material, will not hurt the car or leave marksJack Support Cushioning Pressure PadsSoft enough rectangle pads surface are to stop frame rails and pinch welds from bending,and protect painted or coated chassis parts when using floor jack to lift the carConvenient and EfficientHydraulic Horizontal Jack Trays are suitable for maintaining your jacks performance, supporting top, repair car towing Specification: Material: PP Size Chart: 12cmx8cmx2.4cm/4.72inchx3.15inchx0.94inch Package Includes: 4 Pieces Jack Stand Pads Note: Please allow slightly errors due to manual measurement and different monitors.