A camera dolly is a wheeled cart or similar device used in filmmaking and television production to create smooth horizontal camera movements. The camera is mounted to the dolly and the Camera operator and focus puller or camera assistant usually standing in the space between the rails to push the dolly back and forth on 12ft track.
 
The Robust and Portable “Shootvilla Swift pro Camera Dolly with 12ft straight track is built for professional videographers and cinematographers who really want to enhance the fluid action in footages at an affordable price. It’s high quality constructed Portable Camera Dolly with 3 wheel system which allows the camera and camera operator to move around very smoothly.