polyyurethane wheel with central bearing(orange)

1. Horn: Double ball raceways design, black color painted.
2. Wheel: Orange Polyurethane(90A~95A) / Silvery thread guards (central precision ball bearings)
3. Suggest to use for many field with different environment.
    Temperature range: -20℃~80℃
4. Load Capacity: 1.6":32KG,  2":40KG,  2.5":72KG,  3":100KG,  4":130KG,  5":142KG