T206 Cobalt Round Toolbits

This material is the standard high-cobalt material used at Metalbor and gives excellent performance at high rates of
cut in both standard and highly-alloyed steels, cast alloys and Titanium alloys. It tolerates vibration and interrupted
cuts. It is in most respects superior to M35 5% cobalt HSS which is used as the standard cobalt material in Europe.

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.