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

Product ID: 314046508

Details

Brand
DEWALT
Cutting Angle String
135 Degrees
Finish Type
Brushed
Material
High Speed
Shank Type
Straight

🎯135° split-point precision

⚙️21-piece versatile set

🛡️Black oxide corrosion resistance

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€ 70.84

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Description

🛠️ Drill Like a Pro, Finish Like a Boss

BUILT TO LAST - Black oxide coating fights rust and wear, ensuring your bits stay sharp and reliable longer.
PRECISION ON CONTACT - 135° split-point tips eliminate walking for pinpoint accuracy every time.
SECURE GRIP NO SLIP - 3-flats shank design prevents spin-out, giving you full control under pressure.
SMOOTH DEEP DRILLING - 31° helix angle and parabolic flute design optimize chip ejection and reduce bit aggressiveness.
ALL IN ONE POWER PACK - 21 high-speed steel bits cover metal, wood, PVC & fiberglass drilling needs effortlessly.

The DEWALT 21-piece drill bit set features high-speed steel construction with a durable black oxide coating to resist corrosion. Designed with 135° split-point tips and a 31° helix angle, these bits deliver precise, clean holes across metal, wood, PVC, and fiberglass. The parabolic flute design enhances chip removal, while the 3-flats shank ensures a secure chuck grip, making this set a versatile, long-lasting essential for professionals and serious DIYers alike.

Specifications

ASIN	B079VJMH6T
Best Sellers Rank	#3,698 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #10 in Jobber Drill Bits
Brand Name	DEWALT
Customer Reviews	4.8 4.8 out of 5 stars (5,843)
Cutting Angle String	135 Degrees
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	1 Pounds
Manufacturer	DEWALT
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

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€ 70.84

Duties & taxes included

In stock

Sold byAmazon CyprusDelivered 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 Cyprus.

Secure transaction

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