Note: please close look at the clothes rack installation method: put on the seat head pillow take down， most of the cars can be the (headrest can not take the open from the side hole card into)， in the direct insertion hanger holes， please close attention to what. Diameter: bracket hole diameter is 1cm， when people buy can first test a headrest of the column hole diameter is in how many， Volkswagen， Audi， Buick New Regal buyers please pay more attention to the size of the BMW series， series， Audi， the new Regal， unable to use this product， product packaging apart not returned!