An insert holder has {HEAD ~ a cross section} with {TAIL ~ a main positioning side} abutting a first primary locating side of the insert, and having a secondary positioning side abutting one of the insert secondary locating sides 
with
An insert holder has { HEAD ~ a cross section } with { TAIL ~ a main positioning side } abutting a first primary locating side of the insert , and having a secondary positioning side abutting one of the insert secondary locating sides
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH