| 810 arm size | 1.5m/2m/2.5m/3m Width:2-6m |
| 820 arm size | 1.5m/2m/2m/3m/3.5m Width:2-6m |
| 840 arm size | 1.5m/2m/2m/3m/3.5m/4m Width:2-8m |
| Optional | Arm with or without a light |
| Frame | Outdoor Powder Coated |
| Alloy die casting | Durable ,not easy broken |
| Elastic scaling | Built-in spring steel materials |
| Warranty | 5 Years for Frame |













