In accordance with the teachings of the present invention, {HEAD ~ adjustable ring structure} is provided wherein {TAIL ~ a ring shank} is hinged to define first and second arcuate elements having an aperture therebetween 
wherein
In accordance with the teachings of the present invention , { HEAD ~ adjustable ring structure } is provided wherein { TAIL ~ a ring shank } is hinged to define first and second arcuate elements having an aperture therebetween
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH