| Type | Length | Length of folding | Weight | Stepping Width | Weight of loading |
| BLDS-40 | 4.0m | 2.7m | 16kg | 40mm | 100KG |
| BLDS-50 | 5.0m | 3.3m | 20kg | 40mm | 100KG |
| BLDS-60 | 6.0m | 3.7m | 24kg | 40mm | 100KG |
| BLDS-70 | 7.0m | 4.3m | 28kg | 40mm | 100KG |
| BLDS-80 | 8.0m | 4.7m | 32kg | 40mm | 100KG |
| BLDS-90 | 9.0m | 5.3m | 36kg | 40mm | 100KG |
| BLDS-100 | 10m | 5.7m | 40kg | 40mm | 100KG |
