Hospitium lectum rotae tria rotam
Casters, etiam notum est universalis rotae, habent structuram quae concedit pro CCCLX gradu horizontalis rotatione sub dynamic aut static onerat. Type rota solet in conjunction cum fixum casters, quae non rotating structuram et non rotate horizontaliter non solum rotate verticaliter. There are various materials for casters, including PP casters, PVC casters, PU casters, cast iron casters, nylon casters, TPR casters, etc. According to their load-bearing capacity, they can also be divided into micro casters, light casters, medium casters, heavy casters, and ultra heavy casters.