It is a hardware for attaching the rear monitor to the headrest shaft of a wide variety of vehicles.
We also include hardware that supports 1/4 camera screw to accommodate more monitors and other devices.
Monitor Mounting Hardware, Arm Cover Rubber Spacer Hex Wrench for 1/4 Camera Screws
Note: Headrest pitch: 4.7 - 7.5 inches (120 - 190 mm) shaft diameter 0.4 inches (10 / 13 mm). Also, it cannot be attached to bucket shaped seats. For safety, please do not attach to headrest that may be moved in case of collision and reduce shock. Mounting hardware is for the left seat only. Please install the monitor on the right side of the left seat; If the shaft or boots are special, the product may not be compatible.