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expired Posted by idk_then | Staff • May 18, 2023
expired Posted by idk_then | Staff • May 18, 2023

21-Piece DeWALT Black Oxide Coated HSS Twist Drill Bit Set

$17

$38

55% off
Amazon
13 Comments 14,625 Views
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Deal Details
Amazon has 21-Piece DeWALT Black Oxide Coated HSS Twist Drill Bit Set (‎DWA1181) on sale for $17. Shipping is free with Prime or orders $25 or more.

Thanks to Staff Member idk_then for finding this deal.

About this product:
  • Ideal for general-purpose drilling materials like metal, hardwood, softwood, PVC and fiberglass.
  • Parabolic flute design increases chip ejection in metal and wood drilling applications.
  • Black oxide coating helps resist corrosion and increase durability, so your drill bits last longer
  • 135° Split-point tips drill on contact and prevents walking on the hard surface you're working on
  • 31° Helix reduces over aggressiveness of true parabolic flute, making it ideal for drilling deep holes

Editor's Notes

Written by slickdewmaster | Staff
  • About this Offer:
    • This is $4.89 lower (22% savings) than the next lowest price from a reputable merchant with prices starting from $21.89.
  • About this Product:
    • This is rated 4.8 out of 5 stars based on over 2500 ratings at Amazon.
  • About this Store:
  • Refer to the forum thread for additional deal discussion.

Original Post

Written by idk_then | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Amazon has 21-Piece DeWALT Black Oxide Coated HSS Twist Drill Bit Set (‎DWA1181) on sale for $17. Shipping is free with Prime or orders $25 or more.

Thanks to Staff Member idk_then for finding this deal.

About this product:
  • Ideal for general-purpose drilling materials like metal, hardwood, softwood, PVC and fiberglass.
  • Parabolic flute design increases chip ejection in metal and wood drilling applications.
  • Black oxide coating helps resist corrosion and increase durability, so your drill bits last longer
  • 135° Split-point tips drill on contact and prevents walking on the hard surface you're working on
  • 31° Helix reduces over aggressiveness of true parabolic flute, making it ideal for drilling deep holes

Editor's Notes

Written by slickdewmaster | Staff
  • About this Offer:
    • This is $4.89 lower (22% savings) than the next lowest price from a reputable merchant with prices starting from $21.89.
  • About this Product:
    • This is rated 4.8 out of 5 stars based on over 2500 ratings at Amazon.
  • About this Store:
  • Refer to the forum thread for additional deal discussion.

Original Post

Written by idk_then | Staff

Community Voting

Deal Score
+42
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Visit Amazon

Price Intelligence

Model: DeWalt DWA1181 21-Piece Black and Gold Drill Bit Set

Deal History 

Sale Price
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Current Prices

Sort: Lowest to Highest | Last Updated 7/8/2025, 12:21 PM
Sold By Sale Price
Amazon$19.97
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12 Comments

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Original Poster
Pro
Deal Hunter
May 19, 2023
6,055 Posts
Joined May 2022
May 19, 2023
idk_then
May 19, 2023
Original Poster
Pro
Deal Hunter
6,055 Posts
Has 4.8 stars with roughly 2500 ratings
1
May 20, 2023
411 Posts
Joined Jun 2013
May 20, 2023
kramttocs
May 20, 2023
411 Posts
Thanks. These have held up well (using cutting oil when appropriate helps)
Plus with this case you don't feel like you're going to slice your fingers open getting them out (looking at you Shockwave)
Last edited by kramttocs May 19, 2023 at 09:51 PM.
1
1
May 20, 2023
837 Posts
Joined Oct 2014
May 20, 2023
ronder
May 20, 2023
837 Posts
So this is like the cheaper set but with spares I see. You don't get more sizes. Too bad. Good drills with a good price though.
May 20, 2023
143 Posts
Joined Jun 2013
May 20, 2023
Metallideal
May 20, 2023
143 Posts
Thanks, been waiting for this to drop
May 22, 2023
1,440 Posts
Joined Jul 2009
May 22, 2023
i4k20c
May 22, 2023
1,440 Posts
Quote from kramttocs :
Thanks. These have held up well (using cutting oil when appropriate helps)
Plus with this case you don't feel like you're going to slice your fingers open getting them out (looking at you Shockwave)
when should you use cutting oil?
May 22, 2023
411 Posts
Joined Jun 2013
May 22, 2023
kramttocs
May 22, 2023
411 Posts
The quick answer is when drilling into metal.
I typically use thread cutting oil since I keep plenty on hand for tapping new and cleaning old threads. Just note that depending upon what you are doing with the final product (like painting) you then have to remove all the oil residue. So you may have to decide where the sacrifice should be made.
May 22, 2023
1,440 Posts
Joined Jul 2009
May 22, 2023
i4k20c
May 22, 2023
1,440 Posts
Quote from kramttocs :
The quick answer is when drilling into metal.
I typically use thread cutting oil since I keep plenty on hand for tapping new and cleaning old threads. Just note that depending upon what you are doing with the final product (like painting) you then have to remove all the oil residue. So you may have to decide where the sacrifice should be made.
appreciate this! you seem knowledgeable, so wondering if i can ask you a question about drilling? i recently purchased an Ikea Skadis Pegboard (see link [ikea.com]) . I'm not good with working with my hands and was going to use toggle bolts that can support up to 90 lbs as i will put some electronics on this pegboard (laptop/ipad/etc) - but the toggle bolts say to drill a 1/2 inch hole.

When i look at the 1/2 inch drill bit, it is humongous. Am i being overly precautious to use such an anchor to drill a big hole? i've never really drilled into a drywall so am scared to make such a big hole, especially if i chose to move the location of the pegboard in the future, or take it down. At the same time, i don't want my stuff to fall obviously.

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May 22, 2023
411 Posts
Joined Jun 2013
May 22, 2023
kramttocs
May 22, 2023
411 Posts
I don't want to discount drywall as it can hold a surprising amount of weight if the weight is concentrated against the drywall like most interior hangings are.

That said, I would make sure to hit a couple studs. That Ikea offering is a lot nicer than the 4x8 sheets I have out in my shop that require frequent fasteners (with washer heads) to avoid stretching/bowing.

Looking at their brackets, the wall holes are likely 16" on center to match studs but they may not be. That's also assuming your studs are 16" on center as well as where you want it aesthetically, lines up with studs. If not, no sweat - that's where these drill bits can come into play.
Here is how I would do it:

1. Identify where you want the board (to fit your desk or desire) and mark it off. Blue painters tape works well as you can write on it and just remove it from the wall when done. So put up a long stretch of blue painters tape horizontally with marks showing both ends of the board
2. Find the studs along this length of tape and mark their centers
3. Identify if the bracket will hit the studs with the predrilled holes in the bracket
4. If not, see if moving it over a little until it does is ok and doesn't throw the final position off (again, aesthetics) too much
5. If it doesn't and you need to drill new holes in the bracket, center the bracket to be exactly where you want it, mark on the bracket where the studs are and drill holes using these drill bits. Make a hole for every stud you can hit. For this thin of metal, I wouldn't bother with cutting oil. It looks like the brackets have a reinforcement 'hump' in the middle so use safety as bits can easily 'walk' in cases like this. Using a punch first would be ideal but not absolutely required if careful. Start with a smaller bit but don't push too hard as they are more prone to snapping.
6. Drill a pilot hole through the drywall and into the stud, smaller than the screws you are using
7. Secure the bracket to the studs. Repeat for the bottom bracket

If for some reason you end up with a stud in the center and the two ends of the bracket with the pre-drilled holes are unsupported, I would use some normal 'tap-in' style drywall anchors. The kind you drill a hole for, tap them in with a hammer, and then screw into them.

If you end up putting a lot of weight on the board you could look into 1) getting another ikea bracket and adding it where needed or 2) getting a pegboard kit that comes with stands offs and adding reinforcement where needed. For the latter, you may have to get creative with the stands offs so they are the right height or you can make your own standoffs using a number of items. I'd likely use white 1/4 pex in this case.

This is all sight-unseen so you'll need to see what works in your case. Hope this helps Smilie

May 23, 2023
2 Posts
Joined Jun 2013
May 23, 2023
bunta22
May 23, 2023
2 Posts
What is the difference between these (black oxide) and the Titanium coated once i usually see at the store ?? Looking to get the better one... something that would last me a while.
May 23, 2023
13 Posts
Joined Oct 2020
May 23, 2023
StarvingMusician
May 23, 2023
13 Posts
Quote from bunta22 :
What is the difference between these (black oxide) and the Titanium coated once i usually see at the store ?? Looking to get the better one... something that would last me a while.
Titanium will last longer but at a much higher price. Easily over $50 for a 20-29 piece set.
May 24, 2023
14 Posts
Joined Jan 2018
May 24, 2023
arkashonok
May 24, 2023
14 Posts
Better deal I believe

DEWALT Titanium Nitride Coated Drill Bit Set, Pilot Point, 21-Piece (DW1361) https://a.co/d/8kzCeud
May 24, 2023
5 Posts
Joined Nov 2018
May 24, 2023
mubashir88
May 24, 2023
5 Posts
Why is mine showing up as 26?

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