The RigWheels RA01 1-RigAxle is designed to be used in conjunction with the RigPlate (sold separately). It allows for several different additional configurations that provide with even more options for getting smooth camera movement with the RigWheels system (sold separately).
With the custom inline wheels (sold separately) attached to the ends, you can use the RigAxle to convert the RigPlate (sold separately) into a more robust tabletop dolly with a larger footprint. This is a suitable solution for larger camera setups. Moreover, you can pivot the RigAxle to get curved dolly moves. If used with both RigPlate and RigWheels, it adds a bottom bar to make a captive rail pipe slider.
The RigAxle and RigPlate can be used together with the RailRunner configuration. Four 1/4"-20 holes allow for easy attachment of the RigMount (sold separately) and A-Cups (sold separately). In this configuration, the RigAxle can serve as mounting points for the camera gear as well as stabilization outriggers when using the RigPlate as a camera mount.