More particularly, it relates to {HEAD ~ a clasp} comprising {TAIL ~ two metallic parts} adapted to be coupled together by the combined action of magnetic attraction and mechanical engagement 
comprising
More particularly , it relates to { HEAD ~ a clasp } comprising { TAIL ~ two metallic parts } adapted to be coupled together by the combined action of magnetic attraction and mechanical engagement
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH