Preferably, said stirrup includes a pair of spaced arms, each arm having one end pivotal about said pivot axis, and {HEAD ~ a transverse bar} interconnecting {TAIL ~ the respective other ends} of said arms 
interconnecting
Preferably , said stirrup includes a pair of spaced arms , each arm having one end pivotal about said pivot axis , and { HEAD ~ a transverse bar } interconnecting { TAIL ~ the respective other ends } of said arms
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH