The DEWALT DW5440 SDS+ hammer bit is built for serious concrete and masonry work. This 1/2 x 16 x 18-inch rock carbide bit features a strong tapered core, two-stage flute design, and two sharp carbide edges that deliver clean, round holes for secure anchors. Whether you're a contractor drilling deep holes in foundation walls or a DIYer mounting shelving, the DW5440 offers the durability and precision you expect from DEWALT.
DEWALT DW5440 SDS+ Hammer Bit: Built for Deep Concrete Drilling
The tapered core of the DW5440 resists flute breakage, especially when you're drilling deep holes. That's the kind of toughness you need on a job site where one broken bit can shut down progress. The two-stage flute design with variable helix pattern aggressively moves debris out of the hole, so you keep drilling at optimal speed without packing dust.
Clean, Round Holes for Secure Anchors
Two sharp carbide cutting edges produce true holes with less walking and fewer blowouts. That means your anchor or dowel sits exactly where you need it. The wear mark indicator lets you check hole diameter accuracy at a glance, so you're not guessing whether the bit has worn down.
Can the DW5440 Drill Through Rebar?
This bit is engineered for concrete and masonry. In most pours, the carbide tips can handle accidental contact with rebar without shattering. But if you're regularly drilling through heavy rebar, we'd recommend a dedicated rebar-cutting SDS+ bit. The DW5440 is protected by DEWALT's No Break Guarantee: if the bit fails for any reason while the wear mark is still visible, DEWALT will replace it (excludes DW5400, DW5401, DW5401B25). That gives you peace of mind on the job.
Selection: Which SDS+ Bit Size and Length?
The 1/2-inch diameter is the most popular size for general masonry anchors and through-holes. With a 16-inch working length and 18-inch overall length, this bit covers deep drilling where standard bits fall short. If you need shallower holes, consider shorter SDS+ bits for better control.
The DW5440 is made in Germany and backed by DEWALT's limited warranty.