|Item Weight||3.2 ounces|
|Product Dimensions||8 x 8 x 8 inches|
|Item model number||11580|
|Style||High Speed Steel|
|Item Package Quantity||1|
Other Sellers on Amazon
Irwin 11580 Unibit20M 14-Millimeter to 24-Millimeter by 1/2-Inch Shank Hole Enlarging Step Drill Bit
|Price:||$100.79 + $6.00 shipping|
- Enter your model number to make sure this fits.
- Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
- Single-flute cutting edge for greater control through steps
- 3 faltted shank prevents slipping in drill chuck
- Patented single-flute cutting edge gives the user a true round hole every time
Customers Who Viewed This Item Also Viewed
CHOKING HAZARD -- Small parts. Not for children under 3 yrs.
Compare to Similar Items
This item: Irwin 11580 Unibit20M 14-Millimeter to 24-Millimeter by 1/2-Inch Shank Hole Enlarging Step Drill Bit
|Shipping||$6.00||FREE Shipping||FREE Shipping||FREE Shipping|
|Item Package Weight||0.2 pounds||0.45 pounds||0.55 pounds||0.3 pounds|
|Material||Stainless Steel||Titanium Nitride Coated||steel||Titanium|
Please help us improve this feature. Tell us what you think of this feature.
From the Manufacturer
Top Customer Reviews
Smooth, sharp cutting edges allows one to produce clean accurate holes with ease in thin metal, plastic and wood.
Pointed tip does indeed prevent the bit from wandering or skipping when starting a hole. No counterpunch or pre-drilling required to achieve accuracy.
The shank is formed to fit 1/4” hex drivers. The amazon product photo does not show these newer driver style shanks (at the time of this review).
Markings are highly visible and easy to read.
The quality workmanship of this product is obvious: sharp, finely machined, highly visible markings.
There really isn’t anything serious to complain about, so consider the following list to be nit-picking…
The bit fits standard 1/4” hex drivers, but the shank section before the groove is a bit shorter than normal (see photo). This is no problem whatsoever in magnetic drivers. In my non-magnetic Makita impact driver the bit had slightly more in-and-out play than usual, but it did not affect drilling performance. (I warned you I was nit-picking!).
If you enjoy using top quality tools then this set is worthy of your consideration.
If you like short reviews - stop here!
On the other hand, if you like lots of extra information, then please by all means read-on…
The bit has a hex shank for positive slip-free use in standard drill chucks. This #2 bit also fits in standard 1/4” drill drivers, impact drivers, etc.Read more ›
I like the cobalt better than titanium because the cobalt is part of the metal, and so can be resharpened if needed, whereas the titanium eventually wears off.
Worked with another guy recently on my boat, and his bits kept breaking. I noticed they were the bright polished gold bits, like you see on Amazon and elsewhere for about half what the Irwin costs. So where's the savings if you have to replace your bit every few months ? I've always had good luck with Irwin stuff - they seem to be solid all around their line.
If you haven't used step bits yet, you will soon be converted. Not only are they great for making holes in thin metal (electrical boxes especially) but they work in wood and plastics too. And they are the only way I know of to make a small hole bigger (without resorting to elaborate schemes which take time and rarely work as well as I'd like).
Most Recent Customer Reviews
I wore a non coated one out after ten years of hard use. Even if this one lasts the same still a great buy.Published 1 month ago by Dana R. Longever
Did what I needed it to do. Cut a 5/8" hole in a 1/4" mild steel plate. Steps are 1/8" deep so I had to flip the plate over to finish, but it worked out fine. Read morePublished 4 months ago by Jessica Morris
Excellent product -- Functions as intended -- No complaints here --Published 5 months ago by Stevie B.
Lasts a long time unless you try to fly with it, then it ends up in a garbage can. Promptly purchased another.Published 6 months ago by Keith Dk
I used to use bits like these when I installed whiteboards and projectors in schools for a living. I used them for cutting holes in the pole that connects the ceiling bracket to... Read morePublished 7 months ago by Wandering Ron1n