Step Drill Bit Set:3 Piece, Titanium Nitride Coated, 31 Hole Sizes, 1/8 in to 7/8 in, 1/4 in Shank Hex Size (DWA1790IR)

The DWA1790IR three-bit set with stepped measurements (view larger).

With this three-piece set of impact-ready step drill bits from DEWALT (model DWA1790IR), you'll get the job done more efficiently with less reactionary torque -- in less time. They're optimized for your DEWALT impact driver with its 1/4-inch hex shank, but they also deliver strong performance every time in rotary drill drivers.

The advanced double spiral flute design outperforms straight flute design and extends the life of the bit. The split point tip increases speed, and they also include laser-engraved measurements to increase step visibility. This package includes a 1/8- to 1/2-inch bit, a 3/16- to 1/2-inch bit, and a 3/16- to 7/8-inch bit.

Among the wide variety of applications these bits can be used for, they're ideal for drilling into cans, panels, and junction boxes for electricians; enlarging holes in ducts for HVAC applications; and enlarging door hardware for carpenters.

What's in the Box

Three step drill bits (model DWA1790IR)

About DEWALT

DEWALT is a leading manufacturer of industrial power tools and accessories, including corded and cordless drills, saws, hammers, grinders, routers, planers, plate joiners, sanders, lasers, generators, compressors, nailers, saw blades, metal and masonry drill bits, abrasives, screw driving accessories and more. DEWALT tools can be found nationally and internationally wherever tools are sold. With more than 1,000 factory-owned and authorized locations, DEWALT has one of the most extensive service and repair networks in North America.

DWA1790IR 3-Piece Impact Ready Step Drill Bit Set At a Glance

• Optimized for impact driver usage; works with rotary drills
• Laser engraved numbers increases step visibility
• Split point tip increases speed
• 1/4-inch hex shank