An adjustable bracket connects to the collar to permit {HEAD ~ the adjustable bracket} to move axially along {TAIL ~ the spindle} together with the collar 
to move axially along
An adjustable bracket connects to the collar to permit { HEAD ~ the adjustable bracket } to move axially along { TAIL ~ the spindle } together with the collar
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH