| Model | Steps | Height | Max Load |
| SST-6 | 6 | 1.8m | 135kg |
| SST-8 | 8 | 2.4m | 135kg |
| SST-10 | 10 | 3.0m | 135kg |
| SST-12HD | 12 | 3.6m | 135kg |
| SST-14HD | 14 | 4.2m | 135kg |
| SST-16HD | 16 | 4.8m | 135kg |
| Model | Steps | Height | Max Load |
| SST-6 | 6 | 1.8m | 135kg |
| SST-8 | 8 | 2.4m | 135kg |
| SST-10 | 10 | 3.0m | 135kg |
| SST-12HD | 12 | 3.6m | 135kg |
| SST-14HD | 14 | 4.2m | 135kg |
| SST-16HD | 16 | 4.8m | 135kg |