The vanes have a rectangular shape with a height twice the diameter.
Above the vane blades, a thin enlarging ring is fixed in order to eliminate from the measurements most of the force component due to soil friction along the section of the rod inserted into the ground.
Available vanes:
- 60×30
- 50×25
- 38×19
Inner/Outer diameter of the casing tube: 32/48 mm
| Penetrometer | Inner diameter | Outer diameter | Usable vanes |
| DPM 30 | 20 mm | 33 mm | 38 ≥ 19 |
| TG 63-100 | 32 mm | 48 mm | 60 ≥ 30 50 ≥ 25 38 ≥ 19 |
| TG 63-150 | |||
| TG 63-200 | |||
| TG 73-200 |