{HEAD ~ The position} of {TAIL ~ the tray} is then secured with a fastener screwably extending through the second arm into a friction fit relationship with the shelf 
of
{ HEAD ~ The position } of { TAIL ~ the tray } is then secured with a fastener screwably extending through the second arm into a friction fit relationship with the shelf
HEAD HEAD HEAD HEAD HEAD HEAD REL 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