The RAM-VPR-103-1 is designed to hold HP DeskJet 450 and 470 portable printers. The cradle uses a unique patent pending 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 1.25″ to 1.88″. The RAM-VPR-103-1 is designed to hold the following printers: HP DeskJet 450 and 470 portable printersCradle Dimensions: (13.3W x 6.5D x 3.2H) Clamping Dimensions: Width: Min 9” to Max 15.5” Height: Max 2.5”Material: Powder Coated Marine Grade Aluminum Ball Size: 1.5″ Rubber Ball Size Note: Part number reflects product packaged in clear clam shell for store shelf display.