Is the flat shank on all bits?

The shank is round for the bits sized 1/16” to 1/8”. For bits sized 13/64” to 1/2”, they have the three flat shank.

Will these drill thru stainless?

YES. The DWA1181 DEWALT 21-pack black oxide twist drill bit set is ideal for general-purpose drilling materials like metal. It’s no secret that stainless steel is in fact a metal. I’ve used the 9/16” version (not included in this set, but exact same parabolic flute 31 degree helix design) to drill perfect holes in very hard 1/4” thick stainless steel. Use a drill press, not a hand held drill, go slow and use a good lubricant like Anchor. The bit cuts very smoothly and the resulting hole is smooth and shiny inside. Just my 2 cents.

Are these universal? Do they fit most drills?

Yes, the largest drill bit shank in the DWA1181 is a 1/2".

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Drill Bit Set, 21-Piece, 135 Degree Split Point, 31 Degree Helix, Black Oxide Coated, For Plastic, Wood and Metal (DWA1181)

Product ID: 301179731

Details

Brand
DEWALT
Cutting angle string
135 Degrees
Finish type
Black Oxide
Material
Blend
Shank type
Straight

🎯135° split-point precision

⚙️21-piece versatile set

🛡️Black oxide corrosion resistance

11582 kr

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In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Drill Like a Pro, Finish Like a Boss!

DEEP HOLE MASTERY - 31° helix angle balances aggressiveness for perfect deep-hole drilling without wear.
ALL IN ONE POWER PACK - 21 precision bits cover plastic, wood, metal & more for every project.
OPTIMIZED CHIP EJECTION - Parabolic flute design speeds debris removal for faster, smoother drilling.
CORROSION RESISTANT ARMOR - Black oxide coating extends bit life, keeping your toolkit sharp and ready.
EFFORTLESS PRECISION DRILLING - 135° split-point tips start on contact, eliminating walking and ensuring clean holes.

The DEWALT 21-piece drill bit set features industrial-grade black oxide-coated bits with 135° split-point tips and a 31° helix angle, engineered for precision and durability across plastic, wood, metal, and fiberglass. Its parabolic flute design enhances chip ejection, making it a versatile, long-lasting choice for professionals and DIYers alike.

Specifications

ASIN	B079VJMH6T
Best Sellers Rank	297,773 in DIY & Tools ( See Top 100 in DIY & Tools ) 2,430 in Drill Bit Sets
Brand	DEWALT
Customer Reviews	4.8 out of 5 stars 5,742 Reviews
Cutting Angle String	135 Degrees
Cutting angle string	135 Degrees
Finish Types	Black Oxide
Finish type	Black Oxide
Global Trade Identification Number	00885911426749
Included Components	(1) 21 Piece drill bit set
Item Dimensions	22.2 x 3.5 x 22.2 centimetres
Item Type Name	Drill Bits
Item Weight	454 g
Item dimensions L x W x H	22.2 x 3.5 x 22.2 centimetres
Manufacturer	DEWALT
Manufacturer Part Number	DWA1181
Material	Blend
Minimum Bore Diameter	2 Millimetres
Model Number	DWA1181
Number of Flutes	2
Number of Packs	1
Number of Pieces	1
Point Style	Split Point
Set Name	21-Piece
Shank Type	Straight
Shank type	Straight
Surface Recommendation	Fiberglass,Metal,Plastic,Pvc,Wood
Tool Flute Type	Parabolic
UPC	885911426749

Reviews

P**L

Is what it is

Great set in one case. Issue with all of these, not just DeWalt, is getting the drill bit out and back in without slicing your fingers.

7.06.2024

L**Y

Works well

Happy with this product

17.07.2025

M**N

BE AWARE - Imperial sizes

For some reason these bits are imperial sizes not metric.

26.02.2024

T**N

Good drill bit set

It from dewalt so pretty straight forward set drill bit. Package look premium and easy to store without loose drill bit. Bit very sharp, drill through wood dry wall with ease. Been use Dewalt for years so it good purchase

6.04.2026

M**.

The quality so far has been impeccable.

Despite the fact I don't use my drill often, any time I needed to do a job on some kind of difficult material, these drill bits have never failed me. Definitely worth the money.

1.04.2024

A**N

Good

Good condition but price a bit too high

24.12.2025

J**E

Ótimas brocas

Ótimas brocas, show de bola.

25.07.2026

D**E

DEWALT DWA1181 21-Piece Set Black Oxide Coated Hss Twist Drill Bit Set

Great set, the great quality you would expect from DeWalt, note that this is a Imperial set and not metric.

25.08.2026

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TrustScore 4.5 | 7,300+ reviews

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Best international shipping I've ever tried. Worth every penny!

3 days ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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11582 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Iceland.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

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