MaterialThis Hydraulic Jack Tray is made of sturdy metal, which is sturdy, high hardness, and reliablefor your vehicle maintenance needs. non-deformable with long service life Shock Absorption and Noise ReductionJack Stand Pad is good elasticity, 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 stands Easy to UsePlace Jack Pad Adapter in the between jack lift arm and the vehicle skirt, and just its jack and the car frame rail. It is 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 marks Jack Support Cushioning Pressure PadSoft enough pad surface is to stop frame rails and pinch welds from bending,and protect painted or coated chassis parts when using floor jack to lift the car Convenient and EfficientHydraulic Horizontal Jack Tray is suitable for maintaining your jacks performance, supporting top, repair car towing Specification: Material: Metal Size Chart: Diameter:12cm/4.72inch Package Includes: 1x Hydraulic Jack Tray Note: Please allow slightly errors due to manual measurement and different monitors.