The hollow is adapted to receive the cap and connection sections and {TAIL ~ an opening} is provided in {HEAD ~ the cover} 
The hollow is adapted to receive the cap and connection sections and { TAIL ~ an opening } is provided in { HEAD ~ the cover }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD