{HEAD ~ Stopper} 26 further is provided with a threaded opening 29 for {TAIL ~ a nut} 30 
{ HEAD ~ Stopper } 26 further is provided with a threaded opening 29 for { TAIL ~ a nut } 30
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH