The material of the body portion is one which has {HEAD ~ strong rebound properties} for tightly gripping around and holding {TAIL ~ the stem} 
for tightly gripping around
The material of the body portion is one which has { HEAD ~ strong rebound properties } for tightly gripping around and holding { TAIL ~ the stem }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL