The carpet strip is secured by {HEAD ~ a pair} of {TAIL ~ labyrinth type clamps} that can be loosened and tightened without use of additional tools 
The carpet strip is secured by { HEAD ~ a pair } of { TAIL ~ labyrinth type clamps } that can be loosened and tightened without use of additional tools
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH