When the circular loop of the hitch is dropped over 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 {HEAD ~ the larger diameter} of {TAIL ~ the ball} and cannot release except by drawing the tote forward relative to the towing vehicle 
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When the circular loop of the hitch is dropped over 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 { HEAD ~ the larger diameter } of { TAIL ~ the ball } and can not release except by drawing the tote forward relative to the towing vehicle
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