The DeWALT 1/2" x 16" x 18" SDS-Plus 2-Cutter Hammer Bit DW5440 is a professional-grade rotary hammer drill bit engineered for demanding concrete and masonry applications. Built with a strong tapered core and two sharp carbide-cutting edges, this SDS+ bit delivers clean, round holes that ensure secure anchor installation - making it a dependable choice for contractors, structural installers, and heavy-duty drilling tasks alike. DeWALT backs this bit with a NO BREAK GUARANTEE, giving users added confidence on the job.

Key Features

• Tapered core construction - resists flute breaks under load, especially when drilling deep holes, reducing bit failure and downtime on the job site.
• Two-stage flute design with variable helix pattern - efficiently moves debris away from the contact zone for faster, more consistent drilling speeds through concrete and masonry.
• Two sharp carbide-cutting edges - produce clean, true, round holes that support reliable and secure anchor installation without requiring rework.
• Wear mark indicator - allows the user to verify accurate hole diameter throughout the life of the bit, ensuring holes remain within specification.
• NO BREAK GUARANTEE - if the bit fails for any reason while the wear mark is still visible, DeWALT will replace it, providing real-world assurance of bit durability.
• SDS-Plus shank interface - compatible with SDS+ rotary hammers, allowing quick bit changes and secure chuck engagement without tool-free retention issues.
• 1/2" diameter x 16" usable length x 18" overall length - provides the reach needed for deep-hole drilling applications while maintaining control and bit integrity.

Why This Product

• The tapered core design specifically addresses the common problem of flute breakage during deep-hole drilling - a critical advantage when working in reinforced concrete or thick masonry where bit failure can cost significant time and money.
• The two-stage variable helix flute pattern keeps the drilling zone clear of debris, which means less heat buildup and more consistent penetration rates - particularly valuable on high-volume anchor setting jobs.
• The built-in wear mark indicator takes the guesswork out of hole sizing, helping ensure every hole meets the diameter specification required for the anchors being installed.
• The NO BREAK GUARANTEE is a manufacturer-backed replacement promise tied directly to visible wear mark presence, offering a level of job-site confidence that goes beyond typical tool warranties.

Specifications

• Manufacturer Part Number: DW5440
• Diameter: 1/2 in.
• Usable Length: 16 in.
• Overall Length: 18 in.
• Shank Type: SDS-Plus
• Number of Cutters: 2
• Pack Size: 1

Frequently Asked Questions

What does the NO BREAK GUARANTEE cover for the DW5440?

If the DW5440 bit fails for any reason while the wear mark is still visible, DeWALT will replace it. Note that this guarantee excludes models DW5400, DW5401, and DW5401B25, but the DW5440 is fully covered under this program.

What is the difference between usable length and overall length on this bit?

The DW5440 has a 16 in. usable length, which is the portion of the bit that can actively drill into material, and an 18 in. overall length that includes the SDS-Plus shank. The 2 in. difference is the shank portion retained by the hammer drill chuck.

Why is the two-stage flute design with a variable helix pattern important?

The variable helix pattern in the two-stage flute design is engineered to move debris quickly away from the contact zone during drilling. This keeps the cutting area clear, supports faster drilling speeds, and reduces the heat and resistance that can lead to premature bit wear or breakage.

How does the wear mark indicator help during drilling?

The wear mark indicator on the DW5440 allows you to verify that the bit is still producing holes at the correct 1/2 in. diameter. As long as the wear mark remains visible, the bit is drilling within specification - and you remain eligible for the NO BREAK GUARANTEE replacement if the bit fails.