Each of {HEAD ~ the longitudinal surfaces} 1 b, 1 c extends upwardly into a crest 30, which defines the highest level of the cutting insert portion with {TAIL ~ height h} above the neutral plane P 
Each of { HEAD ~ the longitudinal surfaces } 1 b , 1 c extends upwardly into a crest 30 , which defines the highest level of the cutting insert portion with { TAIL ~ height h } above the neutral plane P
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH