ZT.DIA.B2.10.4.200.50.X.R0 | 1mm Zirconia Bur for Roland* DWX* Machines (2-Flute Ball) Long Version 1mm 2-Flute Ball Carbide Milling Bur for Zirconia FLATCOAT® DIA Coating, Shaft Diameter of 4mm, No Ring. Long Version