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+1 on the step bits, the single flute (cutting edge) makes a true round hole.
and they're versatile, a single bit can replace 10.
for nicest finish drill from backside to remove burr.
i've used them up to 1 1/2".
you won't be sorry
__________________
bob
1972 E pos
correction: expensive pos
someday....
"shut up and drive!"
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