A PCB drill bit with a 0.85 mm diameter.
Pack of 5
End Mill, 5-Mil Diameter, Tapered 5-Pack
End Mill, 3.9-Mil Diameter, Tapered 10-Pack
End Mill, 5-Mil Diameter, Tapered 10-Pack
Drill Bit, 1.2 mm and 2.3 mm, 4-Pack