Diamond burnishers come in tip sizes from .003" to .030". Larger sizes are available by special order, but can be very expensive. For jobs that require a line width larger than .030", most engravers choose to use a carbide cutter instead of a diamond. If you are engraving on glass, you must use a diamond burnisher.
Shank Size: 1/4 (.250)
Tool Length: 7 inches