polyurethane wheel with double bearings

1. Horn: Double ball raceways design, black color painted
2. Wheel: Orange Polyurethane(90A~95A) / No thread guards(double ball bearings)
3. Suggest to use for many field with different environment. Temperature range: -35℃~80℃
4. Load Capacity: 1.6":41KG,  2":52KG,  2.5":80KG,  3":105KG,  4":135KG,  5":145KG