ZT.DIA.B2.06.3.100.48.X.R4 | 0.6mm Zirconia Bur for Amann Girrbach* Machines (2-Flute Ball) 0.6mm 2-Flute Ball Carbide Milling Bur for Zirconia FLATCOAT® DIA Coating, Shaft Diameter of 3mm, Metal Ring.