Optimum leveling ease occurs at 50% of 4 casters total capacity.; Patent protected anti-vibration axles, ratcheting mechanisms and hardened steel raceway sleeve.; Cast aluminum body with a powder coat finish in ivory.
Heavy duty with good quality PU tread on firm cast-iron core. The caster is made to operate continuously, it also has greases nipples on bracket steel & wheel's cast-iron core. This makes easy maintenance.