polypropylene wheel with central bearing

1. Horn: Double ball raceways design, bright zinc plated.
2. Wheel: Grey color Polyolefin (65D) / Black color thread guards ( Central precision ball bearing).
3. Suggest to use for many environment, like furniture and retail point of sale display, hospital and carpeted areas. Material handling, industry application etc. Temperature range:-15℃~80℃
4. Load Capacity: 2":35KG;  2.5":45KG;  3":72KG;  4":81KG,  5":85KG