Product Details:
Drill up to 13 Diameters with Just One
Drill.
Perfectly Round Holes in Thin Material.
The CRL Unibit Step Drill uses a unique,
single flute design to drill perfectly round holes in thin
materials.
Cutting steps of progressively larger
diameters make it possible to drill up to 13 different hole sizes
with a single bit.
Also, the hole is automatically deburred by
the cutting edge of the next size up.
Steps: 1/4 in (6.4 mm)
Additional Product
Information:
Hole starting is easy because it won't skid
across the surface, even without center punching. Designed for use
with steel, copper, brass, aluminum and other thin metals, it can
also be used on plastics without chipping or clogging.