The Libec ALLEX S 28" Slider with Case features greased ball-bearing wheels within the slider carriage, two hugging the slider rails from each side and four sitting on top, allowing for smooth motion without any wobbling. The tabletop legs are integrated and fold back flat against the rails when you're ready to pack the slider away, so you won't have to spend time removing them. For tripod mounting, a dual base clamp is included that has a 75mm ball base design with a flat bottom. It allows direct compatibility with both bowl base and flat base tripods. 

The sliding range is 28" and payload is 33 lb. The slider carriage has a 3/8"-16 threaded mounting stud and the tripod clamp has a 3/8"-16 thread on the flat bottom. A friction knob allows you to adjust sliding tension, and a brake knob sets the sliding carriage in one place. A bubble level conveniently sticks out on the side so you can measure how even your mounting platform is and adjust the height of the feet on either side if necessary. The feet simply screw in or out to be adjusted, and are tightened in position by knobs above them.

1/4"-20 and 3/8"-16 threads are available on the top ends for attaching articulating arms with lights and other gear, and along the bottom for mounting the slider on two tripods. Rosette adapters are available on both sides for attaching rosette accessories. The included carry case is padded all around and has a zipper running from end to end.