Preferably, {HEAD ~ the inner core} has {TAIL ~ four integrally formed locator pins} extending radially outwardly therefrom 
has
Preferably , { HEAD ~ the inner core } has { TAIL ~ four integrally formed locator pins } extending radially outwardly therefrom
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH