We CNC inserts are divided into positive-angle inserts and cutting tool negative-angle carbide drilling Inserts inserts. TNMG Insert A positive-angle CNC Carbide Inserts insert APMT Insert means parting tool Inserts that turning Insert the insert has a carbide Insert quotation back angle, which is a common single-sided insert. Negative angle insert means that the insert does not parting and grooving Inserts have a back angle and both sides CCMT Insert of the insert can be used.