Just acceptable quality: steel bracket is thin a little low load capacity. The caster is not too durable as it has only one ball bearing raceway in swivel head so if overload or by foreign force the bearing ball may fall out.
Superior than most of small China caster, this one is better both in steel bracket and wheel quality. As you can see GCT Light duty caster is definitely has higher load capacity and last longer. In GCT product range, the plastic casters are prefer over rubber casters.