DEWALT Masonry Drill Bit Set 7-Piece (DW5207) – Carbide-Tip Percussion Bits for Concrete, Four-Flute with Three-Flat Shank

DEWALT's DW5207 is a seven-piece percussion masonry drill bit set built for drilling clean holes in concrete, block, brick and other masonry materials.

Designed for use with hammer/rotary-percussion drills, this set pairs carbide-tipped heads with a four-flute body and three-flat shank to give reliable bite, fast debris removal and secure chuck grip. The assortment covers common anchor and fastener hole sizes so you can prep attachment points quickly without swapping bits constantly.

How do these bits perform in concrete and masonry?

The DW5207 bits use a rock carbide tip shaped to maximize contact with the work surface, improving cutting life and consistency in dense materials. The four-flute geometry channels dust and spoil out of the hole so drilling stays efficient and the bit runs cooler. Expect steady penetration on block, brick, concrete and manufactured stone when used with a proper percussion setting.

• Carbide tip increases durability and maintains cutting edge.
• Four-flute design evacuates debris for faster drilling.
• Optimized for percussion action in hammer drills.

Will these bits stay secure in my drill chuck?

The shanks are engineered with three flats to reduce rotation inside compatible chucks, helping prevent cam-out and bit slip under load. This feature gives a more reliable transfer of hammer and rotary forces when installing anchors or fasteners. Note: three-flat design applies to the DW5207 family configuration.

• Three-flat shank reduces slippage in standard chucks.
• Fits most 3/8" and 1/2" chucks found on corded and cordless hammer drills.
• Stable grip improves control while drilling large holes.

Which sizes are included and what are they used for?

The set includes seven lengths and diameters chosen for common anchor and fastener hole preparation: 3/16" x 3", 1/4" x 4" (two pieces: one shorter and one longer), 5/16" x 6", 3/8" x 6" and 1/2" x 6". These sizes cover small to medium anchor installations, conduit and through-holes typically required on construction and remodeling jobs.

• 3/16" and 1/4" sizes for light anchors and pilot holes.
• 5/16" and 3/8" for medium anchors and fastening hardware.
• 1/2" for larger sleeve anchors, conduit and bolt clearance holes.

How should I use and maintain the DW5207 bits for best life?

Use a hammer/rotary-percussion drill in percussion mode and apply steady, moderate pressure—don’t force the bit. Periodically withdraw to clear dust, keep the flutes free of packed debris, and avoid overheating by pausing on long cuts. Replace bits when the carbide tip shows obvious wear or the drilling requires excessive force.

• Operate in percussion mode on compatible drills for masonry.
• Purge the hole frequently to remove dust and prevent clogging.
• Let the bit cool; avoid extended continuous drilling without breaks.

Who is this for: The DEWALT DW5207 seven-piece percussion masonry set is aimed at professionals and serious DIYers who need a compact selection of durable masonry bits for anchors, conduit holes and general concrete work. It suits tradespeople on job sites and homeowners tackling renovation tasks that demand dependable carbide tips, efficient dust evacuation and a shank design that resists slipping in common chucks.