| HOUSING: | Pressed steel, zinc plated, double ballrace swivel |
| WHEEL: | PP ,plain bearing,durable Low rolling resistance Temperature Range -5 ° C 70 ° C |
| HOUSING: | Pressed steel, zinc plated, double ballrace swivel |
| WHEEL: | PP ,plain bearing,durable Low rolling resistance Temperature Range -5 ° C 70 ° C |