RAM MOUNTS' Vehicle Pole Mount for Mobile Printers with Rear Feed. uses a unique spring loaded mechanism that holds strong, yet provides easy removal for printer storage. At each end of the spring loaded cradle are small side clamp plates that are designed to fit cleanly around either edge of the printer. Included is a standard length arm and round pipe base, which will connect to any RAM Tele-Pole and other poles with a diameter from 1.25in to 1.5in