In selected embodiments, an extension link may be constructed so that {HEAD ~ the length} between {TAIL ~ the stud} and aperture is adjustable 
between
In selected embodiments , an extension link may be constructed so that { HEAD ~ the length } between { TAIL ~ the stud } and aperture is adjustable
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH