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