I'm selling my Revolve motorized slider, with additional slow motor and tripod mounting plate. The rail is 39 in / 1 m long. The regular motor moves the camera the length of the slider in approximately 3 minutes, with the slow motor extending this time out to approximately 3 hours, with a dial allowing for any speed/time in between. Fairly modular design allows for different configurations, such as between two tripods, has many connection points, and the belt can be removed for manual sliding. I used it mostly for timelapse photography with great results. Very solid build quality. Feel free to email/chat/text me if you're interested or have any questions - my name is Erik. Thanks!