{TAIL ~ The enlargement} of {HEAD ~ the expansion claw} allows the anti slip off ring fitted thereon to expand 
{ TAIL ~ The enlargement } of { HEAD ~ the expansion claw } allows the anti slip off ring fitted thereon to expand
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH