ZT.DIA.B2.20.3.250.48.X.R2 | 2mm Zirconia Bur for Imes-Icore* 3mm Shaft Machines (2-Flute Ball) 2mm 2-Flute Ball Carbide Milling Bur for Zirconia FLATCOAT® DIA Coating, Shaft Diameter of 3mm, Plastic Ring.