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