... bur, ZZZ bur Wieland bur, VHF zirconia bur, manual operation bur, ZZZ bur ... for aluminum, copper application, chip-dividing groove (for rough mill application) MRll diameter: (miniature) φ0.10mm---φ ... of machining,Super-finish→ finish, semi-finish→ semi-rough, rough machining→ power (heavy) cutting HRF10ultra micro-grain ... application. Wieland bur, VHF zirconia bur, manual operation bur, ZZZ bur