A double ended metal cutting insert includes {HEAD ~ a pair} of {TAIL ~ circular cutting edges} disposed at respective end surfaces of the insert 
of
A double ended metal cutting insert includes { HEAD ~ a pair } of { TAIL ~ circular cutting edges } disposed at respective end surfaces of the insert
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH