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2 Piece Titanium Nitride Coated M2 High Speed Steel Step Drills - 96275 view this item at harborfreight.com »

Ratings: (5 is best)

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Review by djlazar on February 19th, 2011
Best buy for an electrician. Unlike a $60 Greenleee step bit, it's no big deal if it gets stolen or lost. Not bad for the money, and easy enough to sharpen.
Review by Goomer on January 29th, 2010
They really do work and very well. They are for sheetmetal, anything close to 1/8" is about the limit, but for say, a new hole in a metal electrical box or panel they are great. I used to think these were sort of a gimmick, but used one (a Greenlee) on a job and saw the light. They don't grab, they drill straight in sheetmetal, they don't leave much of a burr and you can clean off what burr there is with the next step in the bit. And these seem to be as good as the Greenlee that was at least 10X the cost per bit.

I find the smaller set of three more useful, but these also have their place.

The bits tend to stay on the mark when starting a hole and not skate around like a standard bit.

They will drill stainless, but it will dull them pretty fast. They are easy to sharpen by running a stone or small rotary tool down the inside of each flute. Its not critical to get each one even, they are a very forgiving design.

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