We CNC inserts are divided into positive-angle inserts and negative-angle inserts. A positive-angle tungsten long inserts insert means tungsten brazing inserts threading Insert that the insert carbide drilling Inserts has a back angle, which tungsten carbide Inserts is a common single-sided insert. Negative angle insert CCGT Insert means that the insert Cutting Tool Inserts does not have a THREADING INSERTS back angle and both carbide wear inserts sides of grooving Inserts the insert can be used.