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".

Dewalt Drill Bit Set 21 Pc High Speed Steel Dewalt

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Description

🔩 Drill Like a Pro, Finish Like a Boss!

DEEP HOLE MASTERY - 31° helix angle balances aggressiveness for efficient deep drilling without damage.
ULTIMATE VERSATILITY - 21 high-speed steel bits cover metal, wood, PVC & fiberglass drilling needs.
OPTIMIZED CHIP EJECTION - Parabolic flute design speeds up debris removal for smoother drilling.
PRECISION DRILLING EVERY TIME - 135° split point tips prevent walking for clean, accurate starts.
CORROSION RESISTANT DURABILITY - Black oxide coating extends bit life by resisting rust and wear.

The DEWALT 21-piece High Speed Steel Drill Bit Set features black oxide coating for corrosion resistance, 135° split point tips for precise starts, and a parabolic flute design for efficient chip removal. Engineered for durability and versatility, this set handles metal, wood, PVC, and fiberglass with ease, making it an essential upgrade for professionals and serious DIYers alike.

Specifications

ASIN	B079VJMH6T
Best Sellers Rank	#3,870 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Jobber Drill Bits
Brand	DEWALT
Brand Name	DEWALT
Customer Reviews	4.8 out of 5 stars 5,757 Reviews
Cutting Angle String	135 Degrees
Finish Type	Brushed
Finish Types	Brushed
Global Trade Identification Number	00885911426749
Included Components	(1) 21 Piece drill bit set
Item Dimensions	8.75 x 1.38 x 8.75 inches
Item Type Name	Drill Bits
Item Weight	16 ounces
Item dimensions L x W x H	8.75 x 1.38 x 8.75 inches
Manufacturer	DEWALT
Material	High Speed Steel (HSS)
Material Type	High Speed Steel (HSS)
Model	DWA1181
Number of Flutes	2
Number of Pieces	1
Part Number	DWA1181
Point Style	Split Point
Set Name	21-Piece
Shank Type	Straight
Surface Recommendation	Fiberglass,Metal,Plastic,Pvc,Wood
Tool Flute Type	Parabolic
UPC	885911426749

Reviews

C**M

12.03.2026

T**N

6.04.2026

R**S

8.08.2025

S**S

5.03.2026

M**K

19.06.2024

E**.

30.04.2026

D**D

20.03.2026

D**N

27.04.2025

M**.

1.04.2024

A**N

24.12.2025

E**O

5.02.2026

C**R

10.01.2026

M**E

28.09.2024

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

€ 61.50

Duties & taxes included

In stock

Sold byAmazon SpainDelivered 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 Spain.

Secure transaction

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DEWALT Drill Bit Set, 21 Pc High Speed Steel DEWALT Bits, Black and Gold Oxide Coated, 135 Degree Split Point, 31 Degree Helix (DWA1181)

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