A pivotal shaft is inserted into {HEAD ~ shaft penetrating apertures} formed in {TAIL ~ the hinge ledges} so that the hair retainers are pivoted about the pivotal shaft 
A pivotal shaft is inserted into { HEAD ~ shaft penetrating apertures } formed in { TAIL ~ the hinge ledges } so that the hair retainers are pivoted about the pivotal shaft
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH