{HEAD ~ Two positioning bolts} extend through the collars and are threadedly connected to {TAIL ~ the two ends} of the axle 
are connected to
{ HEAD ~ Two positioning bolts } extend through the collars and are threadedly connected to { TAIL ~ the two ends } of the axle
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH