edelkrone Wing 3 Slider for Small Cameras & Smartphones 80509
Amazon.com : PROAIM Sway Extendable Video Camera Slider for DSLR, GoPro & Smartphone. Covers Up to 4× Linear Motions on Tripod. Smooth & Consistence Glides, Lock for Static Shots. W/ 3kg/6.6lb Payload (
DigiSlider Motorized Wing Arm Camera Slider for Timelapse or Video - YouTube
The Edelkrone Wing is the rail-less slider that gives you the movement that you need - The Gadgeteer