|Standard cut is a general
purpose tool designed for cast iron, steel, some copper and
brass, and other ferrous materials. It will give good
material removal and good work-piece finishes
||Double Cut allows for
rapid stock removal in harder materials. The addition of
the left hand flutes reduces the pulling action, allowing
better operator control. It reduces the size of the
chips and can be used at slower than normal speeds.
||NF Burs are designed for
use on aluminum, non-ferrous metals, soft steel, reinforced
plastics, and other soft materials.