Product: Solid PCBN InsertsMaterial: PCBNType: Standard,Website:http://www.chinabettool.com, Non-standardProduct Description:Solid PCBN inserts are processed according to your requirement.We use high purity material to produce PCBN material, good grinding will cause to good insert edge,Micro crack is a big problem, when we inspect the tools by electron microscope, if no good grinding, you will find many micro cracks, it will cause to big crack on the insert tips, and the service life will be reduced.Good control is very important, careful inspection is necessary.