This Kargo Keeper 1871 with extender mechanism has an operating range from 1880 mm to 2850 mm and utilizes a strong square tube of 35 mm. It is easily and quickly adjusted to the right height and once adjusted it is also fast and easy to reposition by releasing the extender mecha nism, enabling the adjustable end to lower a few cm.  The rubber feet are specially designed to position the Kargo Keeper close to the load. The maximum range is marked in red on the inner tube.