1. Only two cutting edges.
2. Single edge flutes clog easily.
3. Melts plastic while drilling.
4. Drills thin metal leaving burr.
5. Blind Holes are round bottomed.
6. Point walks on smooth surface.
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1. Six cutting edges but only two edges for bore diameter.
2. Single edge flutes clog easily.
3. Melts and shreds plastics.
4. Tears sheet metal.
5. Tip tang prevents shallow blind drilling in thin materials.
6. Works on wood only.
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1. Six cutting edges for
smoother, faster boring in wood. 20%
more cutting edge
means longer life.
2. Double edges flutes for fast chip removal.
3. Drills plastic cleanly without causing melting.
4. Drills aluminum and metal sheet cleanly
with less heat and small chips-no
clogging.
5. Nearly flat bottom blind holes.
6. Will not "walk" on smooth surface.
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