As additional shaft on the tripod ALFAE for an easy height adjustment of the camera up to 30 cm (11.8?). Very sturdy design. The self-locking rod is encased in a wedge-shaped guiding mechanism. Longer shaft for adjustment to up to 75 cm (29.5?) available on request (extra charge). Thanks to the lateral 3/8? inner thread, the crank-operated rod ALFEA can be used as a horizontally sliding beam on all tripods and studio stands.