Cutting deep V-Grooves is also made easier with these burrs. Run a line with these first, then put a barrel burr into the line. Doing so will preserve the edge of your barrel burrs, because the depth of the channel will have already been cut. You're only widening it.
Made In: China
Head Size: 12 burrs ranging in size from 0.8mm to 8.5mm, all different sizes
Shaft Diameter: 2.3mm
Overall Length: 42.5mm
Grit: 150gPieces: 12 burrs all different sizes as set