... grain carbide 2.2 flute and ball nose 3.HRc30~65 USG ball nose carbide end mill (short, long, minature ... length) Specification:Materials: micro grain carbideBall nose type2 FluteSurface treatment: HOMOhardness:HRc30~65 SHORT length:•economic type ... cut: 2.5~50mmoverall length: 50~180mm MINIATURE BALL NOSE:•high precision milling in medical, optical, electronics and aerospace ...