Do you want a small slider for travelling or hiking and a longer one for your studio work? Then this Double ZenSlider kit is for you.
Thanks to the simple and modular design of the ZenSlider, it comes with two complete rails with the length you choose plus one ZenController and one motor.
The kit is a cheap alternative to having two different length sliders. Note that you can not use both at the same time as there is one motor and one controller.
Remove the motor from one slider to the other slider by just releasing two screws. A two minute job.
For more: http://zenslider.com/zenslider/