Which machines are compatible with this drill bit?

This hammer drill bit features an SDS-Max shank and fits all rotary hammers with an SDS-Max tool holder.

What materials can you drill with the Dewalt DT9448-QZ?

It is designed for drilling into concrete, reinforced concrete, masonry, brickwork, and natural stone.

What are the exact dimensions of this bit?

It has a drilling diameter of 45 mm, a working length of 450 mm, and a total length of 570 mm.

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

The 4-cutter head produces concentric holes, reduces jamming in reinforced materials, and ensures rapid dust removal.

Can this drill bit be used in an SDS-Plus drill?

No, SDS-Max shanks are significantly larger and will not fit SDS-Plus chucks without a dedicated adapter.

DEWALT DT9448-QZ SDS-Max drill bit EXTREME HM 45x450x570mm

Name: DEWALT DT9448-QZ SDS-Max drill bit EXTREME HM 45x450x570mm
Brand: DEWALT
SKU: 08071184
Price: 136.95 EUR
Availability: PreOrder

Supplier number: DEWALT DT9448-QZ | EAN 5035048060155

Recommended Retail Price €322.71

136.95 tax incl.

€113.18 excl. VAT (incl. all environmental contributions)

On order: delivered from 14/10/2026

Ordered before 20:00 - delivered as of 14/10/2026
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.

Heavy-duty performance with Dewalt DT9448-QZ

Practical benefits

Precise concentric hole creation: The four-cutter carbide head enables you to drill accurate, clean holes through concrete, brick, and masonry effortlessly.
Rapid debris removal design: The four-flute spiral clears dust quickly from the hole so you maintain continuous drilling speed during heavy work.
Superior impact power transfer: A reinforced core combined with the SDS-MAX shank delivers maximum energy transfer while minimizing the risk of breakage.

In a nutshell

The right choise for

With the Dewalt DT9448-QZ SDS-Max hammer drill bit, you tackle demanding large-diameter drilling in reinforced concrete, masonry, and natural stone with complete confidence. Its 45 mm diameter and 450 mm working length let you create deep penetrations through thick walls and foundations for conduits, pipes, or heavy structural anchors. The four-cutter carbide head produces clean, concentric holes while reducing jamming when hitting rebar. Combined with a four-flute spiral for rapid dust removal, the reinforced core and SDS-Max shank ensure maximum impact energy transfer directly to the drilling tip.

Product information FAQ

€136.95

tax incl.

Key features according to our expert

Diameter: 45 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 45x450x570mm

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 a hardened steel housing for extra strength and less breakage
Sturdy cutting head is flanked by two separate cutting tips that deliver fast and efficient drilling speed

All Features

Diameter: 45 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: 45,0 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
08071184
EAN 5035048060155
Supplier number DEWALT DT9448-QZ

Frequently asked questions about this product

Answered by specialists

Which machines are compatible with this drill bit?: This hammer drill bit features an SDS-Max shank and fits all rotary hammers with an SDS-Max tool holder.
What materials can you drill with the Dewalt DT9448-QZ?: It is designed for drilling into concrete, reinforced concrete, masonry, brickwork, and natural stone.
What are the exact dimensions of this bit?: It has a drilling diameter of 45 mm, a working length of 450 mm, and a total length of 570 mm.
What is the benefit of the 4-cutter carbide head?: The 4-cutter head produces concentric holes, reduces jamming in reinforced materials, and ensures rapid dust removal.
Can this drill bit be used in an SDS-Plus drill?: No, SDS-Max shanks are significantly larger and will not fit SDS-Plus chucks without a dedicated adapter.