polyurethane wheel with Double bearings

1. Horn: Double ball raceways design, black color Rugged painted.
2. Wheel: Orange Polyurethane (90A~95A) / double ball bearings.
3. Suggest to use for many field with different environment. Like workshops, warehouses, manufacturing and restaurant. Temperature range: -35℃~80℃
4. Load Capacity: 4":265KG,  5":325KG,  6":380KG,  8":405KG