PT.TEC.B2.06.3.050.38.X.R3 | 0.6mm PMMA/PEEK Bur for VHF* Machines (2-Flute Ball) 0.6mm 2-Flute Ball Carbide Milling Bur for PMMA/PEEK FLATCOAT® TEC Coating, Shaft Diameter of 3mm, Spring Ring.