These casters are usually used for flat surfaces for both indoors and outdoors. They can handle 70 kg per wheel. The use of these casters makes starting a carrier smoother.
The car interface can be removed in 5 minutes so that the floor of the vehicle can be used for other applications.
For this you need 6 knobs tested at 2000 newton. An important precondition for your safety. This is very specific mounting material that is not easy to obtain.