Power Acoustik HDVD-93GRDK Single 9-Inch Replacement Headrest with DVD and Video Monitor (Dark Gray) Simgle 9-inch-inch replacement headrest available in four colors,Beige,Gray,Black,Dark Gray Single 9-inch headrest screen with built-in DVD USB/SD card inputs for MP-4 and Divx movies Adjustable poll widths 5 3/8-inch ~7.5-inch 3/8-inch, 7/16-inch, 1/2-inch, 9/16-inch pole diameters