A spindle of {HEAD ~ the magnetic core} has {TAIL ~ first and second flat surfaces} extending perpendicular to a direct axis of the magnetic core 
A spindle of { HEAD ~ the magnetic core } has { TAIL ~ first and second flat surfaces } extending perpendicular to a direct axis of the magnetic core
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH