Wieland bur, VHF zirconia bur, manual operation bur, ZZZ bur Wieland bur, VHF zirconia bur, manual operation bur, ZZZ bur The photos and introductions ... .1. General\high precision product, surface finish≤Ra0.15μm.2. Adopting advanced power high speed CNC grinder to make ... to the order.Adopting advanced power high speed CNC grinder from Germany and Switzerland as well as high precision (3DX technology ...