Standard Size: It can be widely used for most jacks and vehicles, and can be used for shock absorption of domestic automotive equipment, such as cars, SUVs and lighter vehicles, making it a very practical necessity for automobiles. Reliable Material: Made of rubber, the maximum load capacity can be 2-3 tons, with durable rubber structure and cross groove design. Strong structure, strong elasticity, easy to restore the original shape, wear-resistant, can be used for a long time. Used with a jack to provide soft and strong support and protection for the frame rail. Function: Good elasticity, strong carrying capacity, good cushioning and shock absorption effect. In addition to reducing vibration between the car metal rail and the jack, it can also protect painted or coated suspension parts and prevent frame rails from bending. Easy to Use : Simply place it in the space between the jack lift arm and the vehicle skirt, and align its oblong hole with the jack and chassis rail. The load capacity is very high, there is no risk of deformation or fracture under high pressure. Removal is also very simple and quick, it does not hurt the car or leave any marks.