T18M HSS Round Toolbits

This is the default grade used at Metalbor, and is the most commonly used HSS material worldwide.
It is suitable for all standard machining, including interrupted cuts, in most ferrous materials including free-cutting
stainless, cast alloys and cast iron, and many non-ferrous materials.

Round toolbits traditionally are offered in a more limited variety as standard, but because of their routine
method of production, specials are much more easily and quickly available to order. They are usually finished
with ends ground at 90° to the length, but some smaller sizes may have coned ends. This is because they are
most often extracted from the drill manufacturing line. Tolerance on diameter is generally tighter than for
squares, and toolbits ex blanks from drill manufacture will have the same h8 tolerance as finished drills.