Which drill chuck is this hammer drill bit compatible with?

This drill bit features an SDS-max shank and is designed specifically for rotary hammers with an SDS-max chuck.

What are the dimensions of this drill bit?

It features a 12 mm diameter, a 400 mm working length, and an overall length of 540 mm.

What type of head design does the Dewalt DT9401-QZ have?

It has a 4-cutter carbide tip design for clean, concentric holes and efficient drilling progress.

What materials can you drill with this bit?

This bit is built for heavy-duty drilling into concrete, reinforced concrete, masonry, and stone.

Will this drill bit fit a standard SDS-plus tool?

No, SDS-max shanks are larger and cannot be used directly in SDS-plus rotary hammers.

DEWALT DT9401-QZ SDS-Max drill bit EXTREME HM 12x400x540mm

Name: DEWALT DT9401-QZ SDS-Max drill bit EXTREME HM 12x400x540mm
Brand: DEWALT
SKU: 08071158
Price: 30.95 EUR
Availability: PreOrder

Supplier number: DEWALT DT9401-QZ | EAN 5035048059685

Recommended Retail Price €68.24

30.95 tax incl.

€25.58 excl. VAT (incl. all environmental contributions)

On order: delivered from 07/11/2026

Delivery by DHL

✆ Talk to a specialist

Effortless drilling with Dewalt

Practical benefits

Fast penetration in concrete: The 4-cutter carbide head cuts smoothly through reinforced concrete, masonry, and natural stone.
Rapid removal of dust: The 4-flute helix clears debris instantly so you maintain high drilling speed without clogging.
Enhanced core breakage resistance: A reinforced steel core gives you superior durability and stability under heavy hammer drill impacts.

In a nutshell

The right choise for

With the Dewalt DT9401-QZ SDS-max hammer drill bit, you power through reinforced concrete, masonry, and natural stone with speed and precision. Its 4-cutter carbide head penetrates tough materials smoothly and prevents jamming when hitting rebar. The reinforced steel core provides maximum breakage resistance under high impact energy, while the 4-flute helix clears drilling dust instantly. Featuring a 12 mm diameter and a 400 mm working length, this bit allows you to drill deep through-holes and anchor fixings without swapping tools, keeping your heavy-duty construction projects moving forward efficiently.

Product information FAQ

€30.95

tax incl.

Key features according to our expert

Diameter: 12 mm
Drill bit type: Hammer drill bit
Overall length: 540 mm
Shank type: SDS-max
Material (drill bit): Carbide tip
Number of cutting edges: 4
Cutting length: 400 mm
Product Range: Dewalt EXTREME

Product description

SDS-Max drill bit EXTREME HM 12x400x540mm

Features

4-fold spiral groove, the core of which has been retorted for greater durability, maximises fast removal of drill cuttings
Sturdy cutting head is flanked by two separate cutting tips that deliver fast and efficient drilling speed

All Features

Diameter: 12 mm
Drill bit type: Hammer drill bit
Overall length: 540 mm
Shank type: SDS-max
Material (drill bit): Carbide tip
Number of cutting edges: 4
Cutting length: 400 mm
Thickness: Impact Bits
Weight: NO
Applications: Concrete
Length: 540,0 mm
Material: Carbide Grit
Diameter: 12,0 mm
Product type: 1,0
Max. cutting capacity at 45° [square profile]: SDS Max Fitment
Performance: Extreme
Working length: 400,0 mm
Product range: Dewalt EXTREME

Brand DEWALT
08071158
EAN 5035048059685
Supplier number DEWALT DT9401-QZ

Frequently asked questions about this product

Answered by specialists

Which drill chuck is this hammer drill bit compatible with?: This drill bit features an SDS-max shank and is designed specifically for rotary hammers with an SDS-max chuck.
What are the dimensions of this drill bit?: It features a 12 mm diameter, a 400 mm working length, and an overall length of 540 mm.
What type of head design does the Dewalt DT9401-QZ have?: It has a 4-cutter carbide tip design for clean, concentric holes and efficient drilling progress.
What materials can you drill with this bit?: This bit is built for heavy-duty drilling into concrete, reinforced concrete, masonry, and stone.
Will this drill bit fit a standard SDS-plus tool?: No, SDS-max shanks are larger and cannot be used directly in SDS-plus rotary hammers.