Thank you for viewing. This is a headrest mounting holder for iPads, tablets, and smartphones with a height of 15cm or more. Note: Only compatible with headrests where the arm gap is 13cm to 15cm. I am selling it because it became unusable after I changed cars (Subaru Outback BS9). It is a beautiful item, used only 1-2 times. If anyone is interested, please consider purchasing it.