Folding model allowing access to the trunk (except for certain station wagons, minivans and recreational vehicles) The carrier attaches to a tow ball with an easy-click quick-release system Screw-on clamp handle allows for immediate tension adjustment The anti-theft locking of the bike rack is done with a key To attach the bike rack to your towbar, you need a free space between the ball and the bumper of at least 50 mm To fix it on hitches with screwed plates, the distance between the axis of the ball and the heads of the hitch screws must be equal to or greater than 30 mm (remember to give us a mobile number in order to receive a confirmation text message of the availability of your bike rack in the selected tnt parcel pick-up point) TO DO THIS, PLEASE GO TO THE tnt WEBSITE:https://ww.