Superior than most of Light duty China caster. Steel bracket is more sturdy, durable. PP wheel is formed of excellent material that can last very long. PP wheel is hard so it will not be deflated under loads in long time.
Superior than most of small China caster, better steel & wheel quality. So the caster is definitely has higher load capacity and last longer. In Light duty Series of Gia Cuong Thinh, plastic casters are preferred over rubber casters.