In the case of the clasp of the present invention, such tension acts on the junction between the projection 26 and the groove 16 and is resisted by the mechanical coupling force at the junction, so that said coupling will never be destroyed no matter how high {HEAD ~ a tension} acts on {TAIL ~ the clasp} 
acts on
In the case of the clasp of the present invention , such tension acts on the junction between the projection 26 and the groove 16 and is resisted by the mechanical coupling force at the junction , so that said coupling will never be destroyed no matter how high { HEAD ~ a tension } acts on { TAIL ~ the clasp }
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