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