Designed mainly for agricultural machines and trailers and for construction machinery and for trailers and semi-trailers. They are registered lever.
Models
| P521S/33 | P512S/34 | |
| Outer tube (mm) | 45 | 45 |
| Screw stroke (mm ±10) | 160 | 160 |
| Unitary weight (kg) | 4,8 | 4,3 |
| Max. static load (kg) | 500 | 500 |
| D – Total height when retracted (mm) | 532 | 478 |