{HEAD ~ The direction adjustment assembly} is mounted to {TAIL ~ the coupling assembly} that is attachable to an oil filling hole of an engine 
is mounted to
{ HEAD ~ The direction adjustment assembly } is mounted to { TAIL ~ the coupling assembly } that is attachable to an oil filling hole of an engine
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH