The core should have {HEAD ~ a diameter} of {TAIL ~ 1.500 inches} or less and an intermediate layer having a thickness of 0.090 inches or greater 
of
The core should have { HEAD ~ a diameter } of { TAIL ~ 1.500 inches } or less and an intermediate layer having a thickness of 0.090 inches or greater
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH