A second object of the present invention is to provide {HEAD ~ a clasp} designed to effect {TAIL ~ coupling} by the combined action of magnetic attraction and mechanical engagement 
designed to effect
A second object of the present invention is to provide { HEAD ~ a clasp } designed to effect { TAIL ~ coupling } by the combined action of magnetic attraction and mechanical engagement
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH