... , manual operation bur, ZZZ bur Wieland bur, VHF zirconia bur, manual operation bur, ZZZ bur The photos and ... download,please get our approval firstly, thank you! (*^_^*) Super-hard processing of professional, special, non-standard, special shaped and ... * helical angle * required toleranceMaterial to be machined, Type of machining,Super-finish→ finish, semi-finish→ semi-rough, rough machining→ power ( ...