CNC Indexable Tipped PCD Diamond Insert Turning Tool Inserts.PCD tipped inserts with Four corners of high hardness,good wear-resistance,low friction and heat conductivity.It is mainly suitable for machining non-ferrous metals (e.g.Cu,Al,Mg,Ti,Al-alloys with high Silicon.)and non-metal materials (e.g.glass fiber,ceramics,reinforced plastic etc).