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