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