A collapsible trailer to be towed by {HEAD ~ a bicycle} has front and rear U shaped members pivotally mounted on {TAIL ~ an axle} to the ends of which wheels can be attached 
A collapsible trailer to be towed by { HEAD ~ a bicycle } has front and rear U shaped members pivotally mounted on { TAIL ~ an axle } to the ends of which wheels can be attached
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH