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

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

Q: 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.

Q: 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.

Q: Are these universal? Do they fit most drills?

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

Product ID: 301179731

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Details

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

🎯135° split-point precision

⚙️21-piece versatile set

🛡️Black oxide corrosion resistance

Frequently Bought Together

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

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Description

🔩 Drill Like a Pro, Last Like a Legend

PRECISION ON CONTACT - 135° split-point tips ensure no walking, delivering pinpoint accuracy every time.
OPTIMIZED CHIP EJECTION - Parabolic flute design accelerates debris removal, keeping your workflow uninterrupted.
EFFORTLESS DEEP DRILLING - 31° helix design balances chip removal and control for smooth, deep hole drilling.
VERSATILE MATERIAL MASTERY - Engineered for plastic, wood, metal, and more—your all-in-one drilling solution.
DURABILITY MEETS PERFORMANCE - Black oxide coating resists corrosion, extending bit life for relentless projects.

The DEWALT 21-piece drill bit set features 135° split-point tips for precise starts, a 31° helix for controlled deep drilling, and a black oxide coating that resists corrosion. Designed for versatile use on plastic, wood, and metal, its parabolic flute design enhances chip ejection, making it a durable, high-performance choice for professionals and DIYers alike.

Specifications

Manufacturer	DEWALT
Part Number	DWA1181
Product Dimensions	22.23 x 3.51 x 22.23 cm; 453.59 g
Item model number	DWA1181
Size	One Size
Colour	Multi
Style	Walking
Finish	Black Oxide
Material	Blend
Pattern	Solid
Shape	Rectangular
Power Source	Hand Powered
Voltage	120
Item Package Quantity	1
Number of Pieces	1
Included Components	(1) 21 Piece drill bit set
Batteries included?	No
Batteries Required?	No
Item Weight	454 g

Have a Question? See What Others Asked

Is the flat shank on all bits?

Will these drill thru stainless?

are these 1/4 inch hex

Are these universal? Do they fit most drills?

Reviews

M**E

Tough drill bits

The drill bits are sharp, durable and cut clean holes in wood, metal and plastics. The case is made of tough polycarbonate and the clear lid makes it easy to see if any bits are missing. Overall a very handy set of imperial size drills.

28.09.2024

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

J**Y

Dewalt great drill bits

reliable drill bits, you know that they will work and they do.

6.09.2024

M**N

BE AWARE - Imperial sizes

For some reason these bits are imperial sizes not metric.

26.02.2024

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