When {HEAD ~ the circular loop} of the hitch is dropped over {TAIL ~ the hitch ball} of the towing vehicle, the towing vehicle is pulled forward to draw the elongate extension around the narrower neck of the ball, where the extension is captured by the larger diameter of the ball and cannot release except by drawing the tote forward relative to the towing vehicle 
is dropped over
When { HEAD ~ the circular loop } of the hitch is dropped over { TAIL ~ the hitch ball } of the towing vehicle , the towing vehicle is pulled forward to draw the elongate extension around the narrower neck of the ball , where the extension is captured by the larger diameter of the ball and can not release except by drawing the tote forward relative to the towing vehicle
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH