Which materials is this hammer drill bit suitable for?

It is suitable for drilling in reinforced concrete, masonry, stone, and brickwork.

What type of shank does this drill bit have?

It features an SDS-max shank compatible with all SDS-max rotary hammers.

What is the usable drilling depth?

The overall length is 570 mm with an effective working length of 450 mm.

What is the benefit of the 4-cutter head design?

The 4 carbide cutting edges deliver fast drilling, round holes, and reduce jamming when hitting rebar.

Can this drill bit be used with an SDS-plus tool?

No, this bit has an SDS-max shank and is not compatible with SDS-plus machines.

DEWALT DT9449-QZ SDS-Max drill bit EXTREME HM 50x450x570mm

Name: DEWALT DT9449-QZ SDS-Max drill bit EXTREME HM 50x450x570mm
Brand: DEWALT
SKU: 08071185
Price: 143.8 EUR
Availability: PreOrder

Supplier number: DEWALT DT9449-QZ | EAN 5035048060162

Recommended Retail Price €347.51

143.80 tax incl.

€118.84 excl. VAT (incl. all environmental contributions)

On order: delivered from 21/10/2026

Ordered before 20:00 - delivered as of 21/10/2026
Free shipping
Delivery by DHL
Delivered from Belgium

✆ Talk to a specialist

What does this mean exactly?

Free battery, delivered directly: spend a total of €350 excl. VAT on DeWALT products and receive a free XR 18V 5.0Ah battery worth €128.38. This is an exclusive Klium promotion: the battery is automatically added to your shopping cart and delivered together with your order.
Free work light, delivered after registration: if you also purchase a participating product from the DeWALT work light promotion, you will receive a free DeWALT work light, depending on the participating machine.
To receive your free work light, register your purchase after receiving your order via dewalt.be or dewalt.nl.
Klium free battery promotion: valid from 01.10.2026 to 31.12.2026.
DeWALT work light promotion: valid from 01.09.2026 to 31.12.2026.

During DeWALT Power Month, you can combine a free battery from Klium with a free work light from DeWALT.

High-impact drilling with the Dewalt hammer drill bit

Practical benefits

Fast and accurate holes: The solid 4-cutter carbide head enables you to drill smoothly and precisely through reinforced concrete and masonry.
Efficient dust and debris removal: An open 4-flute helix clears dust rapidly, so you maintain a consistent drilling speed without clogging.
Superior resistance to breakage: The reinforced core and sturdy SDS-Max shank provide optimal impact stability, ensuring you complete heavy-duty jobs safely.

In a nutshell

The right choise for

With the Dewalt DT9449-QZ Extreme SDS-Max 4-CUT hammer drill bit, you drill large 50 mm holes through reinforced concrete, masonry, and natural stone with confidence. The solid 4-cutter carbide head delivers accurate results and minimizes jamming when hitting rebar. An efficient 4-flute helix clears dust quickly, allowing you to maintain continuous drilling speeds without clogging. Featuring a usable working length of 450 mm and an overall length of 570 mm, it allows you to create deep service penetrations for pipes and conduits through thick structures. The reinforced core and sturdy SDS-Max shank ensure direct impact energy transfer and superior resistance against breakage on heavy-duty jobs.

Product information FAQ

€143.80

tax incl.

Key features according to our expert

Diameter: 50 mm
Drill bit type: Hammer drill bit
Overall length: 570 mm
Shank type: SDS-max
Material (drill bit): Carbide tip
Number of cutting edges: 4 ea
Cutting length: 450 mm
Product Range: Dewalt EXTREME

Product description

SDS-Max drill bit EXTREME HM 50x450x570mm

Features

Suitable for fast drilling of plug, anchor or through holes in masonry, stone, concrete and brickwork
Optimised mounting shank ensures perfect grip and optimum power transmission, with hardened steel body for extra strength and reduced breakage
Sturdy cutting head is flanked by two separate cutting tips that deliver fast and efficient drilling speed

All Features

Diameter: 50 mm
Drill bit type: Hammer drill bit
Overall length: 570 mm
Shank type: SDS-max
Material (drill bit): Carbide tip
Number of cutting edges: 4 ea
Cutting length: 450 mm
Thickness: Impact Bits
Weight: NO
Applications: Concrete
Length: 570,0 mm
Material: Carbide Grit
Diameter: 50,0 mm
Product type: 1,0
Max. cutting capacity at 45° [square profile]: SDS Max Fitment
Performance: Extreme
Working length: 450,0 mm
Product range: Dewalt EXTREME

Brand DEWALT
08071185
EAN 5035048060162
Supplier number DEWALT DT9449-QZ

Frequently asked questions about this product

Answered by specialists

Which materials is this hammer drill bit suitable for?: It is suitable for drilling in reinforced concrete, masonry, stone, and brickwork.
What type of shank does this drill bit have?: It features an SDS-max shank compatible with all SDS-max rotary hammers.
What is the usable drilling depth?: The overall length is 570 mm with an effective working length of 450 mm.
What is the benefit of the 4-cutter head design?: The 4 carbide cutting edges deliver fast drilling, round holes, and reduce jamming when hitting rebar.
Can this drill bit be used with an SDS-plus tool?: No, this bit has an SDS-max shank and is not compatible with SDS-plus machines.