The PRK2 PortaRail Camera Slider Rail Kit from RigWheels includes four 40" sections, two threaded connectors, and two 18" rail brackets. The 40" sections can be screwed together via the connectors to form two 80" long rails for the PortaRail collapsible dolly/slider rail system (not included). Though the 80" (per side) length is typical for most setups, you can also add multiple sections for longer shots.
These rails are constructed from 6061 aluminum for rigidity and provide precision camera movement. At 80" the camera slider rails have less than 1/8" of flex with a 40 lb load placed at the center. These rods can also be used with other suspended or ground-rail systems that work with an outer diameter of 1.65" (41.9mm).
The included rail brackets are universal in both width and pipe size. They can be used with tubular rails with an outside diameter between 1 and 2", or you can even use square or rectangular rails up to 1.75". The usable distance between the rails (center to center) is adjustable, and the 18" length of the cross bar makes it suitable for RailDolly camera slider configurations. The rail brackets can be mounted on light stands and tripods.
Note: This kit includes only rails, rail brackets, and connectors. The dolly/slider is not part of the bundle and must be purchased separately.