This cab has front and rear doors and a remote control for operating {TAIL ~ a motor} which drives the chains within both of {HEAD ~ the trollies} simultaneously 
This cab has front and rear doors and a remote control for operating { TAIL ~ a motor } which drives the chains within both of { HEAD ~ the trollies } simultaneously
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH