Micro -Diameter Flat End Mill And Ball Nose End Mill Grain Size :05 ... 92.4 Flexural strength :4000 Micro -Diameter Flat End Mill And Ball Nose End Mill Grain Size :05 um10 ... 1 Suitable for Copper,Cast Iron,Carbon steel,and Mould steel processing.Stainless steel,Titanium Alloy ,Tool ... can inclease the smoothness,reduce the rubbing coefficient, and improve the lathe efficiency ,save more production time ...