This is the larger end of the car charm range: a carved sandalwood medallion on a long silk tassel, with a short beaded cord above. At 30 cm it has real presence, which is what buyers of this format are looking for.
Because of the length, check your local rules — several US states restrict mirror ornaments that could obstruct the driver's view, and a long tassel is more likely to fall foul of that than a short charm. The tassel can be shortened.