Container lift casters, also known as container support feet or container casters, are an adjustable support device used on the bottom of containers. The main function of these casters is to provide support and stability when containers are being stacked or moved, while ensuring that there is some clearance between the bottom of the container and the ground or support surface for forklifts or other handling equipment. 1.Carrying capacity: Since containers are usually loaded with heavy loads, container lifting casters need to have a high carrying capacity. These casters are usually made of strong and durable materials to ensure that no deformation or damage occurs when they are subjected to heavy pressure. 2.Stability: Container lift casters are designed to provide stability and prevent containers from tilting or toppling over when stacked or moved.