Reportedly, CrazyDrills for
aluminum die castings and
wrought alloys provide faster
drilling speeds, higher accuracy,
better surface finishes, and longer
tool life as compared with
standard drills. The tools require
no centerdrilling or pilot holes
and drill at depths up to 10 x diameter.
These high-performance
small drills are available in
diameters of 0.015 to 0.11 in.
in diameter-progressive ratios
of 0.0039 in. and with standard
lengths of 5, 10, 15, and 20 x
diameter.