STEP DRILL BIT

Article#0244226 Model#10239 Format7/8-1 1/8"
STEP DRILL BIT
 

Description

Unibit #9 step drill bit. 2 hole sizes, 7/8 in. and 1 1/8 in.

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Technical specifications

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STEP DRILL BIT is rated 4.4 out of 5 by 19.
Rated 5 out of 5 by from Irwin Unibit #9 on stainless sink After burning through 2 bi-metal hole saws, I found this. Cut a one-inch hole through a high end stainless sink lip in about 10 seconds. You will need to drill a pilot first with a metal bit, but that was easy. Used some oil, then a watering can to keep the heat down. some of the models say they drill a certain number of hole sizes, but in fact its pretty variable.
Date published: 2013-07-24
Rated 5 out of 5 by from Worked for what I needed This is definitely the most expensive drill bit I've ever bought, but it is very nice (and made in the USA!). I needed to drill a hole in an aluminum cooking pot to install a ball valve and this bit cut through the aluminum like warm butter. I need to test it on stainless steel, but haven't had a chance yet. Also, I didn't realize that it needs a 1/2 in drill, not 3/8, but luckily had a friend that had one.
Date published: 2013-06-26
Rated 1 out of 5 by from step bit I made one or two holes with this bit before it would not drill a starter hole without extreme pressure on theddrill. For the cost this should be a better made drill bit. For the money I would add ten more dollars and try the Greenlee step bit.
Date published: 2013-06-26
Rated 5 out of 5 by from Best step bit made The bit lasts a long time. Great for perfect size hole. Higher price than most but last a lot longer. I first bit lasted 12 years and probably longer if I had not lost it.
Date published: 2014-02-16
Rated 5 out of 5 by from Incredible Absolutely incredible. Cut thru heavy steel to make a burn barrel like it was butter. I would have burned up drill bits, but not this monster.
Date published: 2014-11-09
Rated 1 out of 5 by from Terrible product, does a bad job with steel! Does not work well on steel although it is advertised as working in steel. Even though I used a paste coolant the bit dulled almost immediately.
Date published: 2014-02-02
Rated 5 out of 5 by from A must have! A little pricey, but the only thing to make a clean hole in sheet metal.
Date published: 2015-01-09
Rated 5 out of 5 by from Great bit! I have been using a smaller step bit for years and I just love it! This one is the big brother and it worked perfectly when I needed to enlarge a breaker box knockout to make room for the larger 3/4” conduit and hardware. It will get lots of use around me!
Date published: 2017-11-28
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