DEWALT Step Drill Bit Set, 3-Piece – Titanium Nitride Coated, 31 Hole Sizes, 1/8–7/8 in, 1/4 in Hex (DWA1790IR)

Overview

Meet the DEWALT Step Drill Bit Set, a compact trio designed to tackle a range of metal drilling tasks with confidence. Each bit features a titanium nitride coating that can help extend bit life and promote smoother chip flow, making it easier to maintain momentum through tougher materials. The set is optimized for use with impact drivers, while still working well with standard rotary drills for versatility on the job site.

Key benefits at a glance

• Titanium nitride coated two flute spiral design for longer life and smoother chip removal
• Split point tip that starts on contact and reduces walking for quicker progress
• Laser engraved numbers to increase step visibility for fast size selection
• 1/4 inch hex shank for secure bit changes and compatibility with impact drivers
• Engineered for use with impact drivers while also performing well with rotary drills

What you get and how it helps

• Three titanium step drill bits offering a wide range of hole sizes, from 1/8 in to 7/8 in, all in one compact set
• 31 hole sizes across the three bits, enabling progressive drilling without swapping tools mid task
• Double-spiral flute design supports longer life and steady chip clearance during drilling
• Visible size markings thanks to laser engraving helps you stay on track during work

Real-life uses

Ideal for metalworking projects where you need a clean, stepped approach through thin to moderate thickness metal sheets. Useful for electrical panel work, cabinetry, or DIY metal projects where multiple hole sizes are required. The bits’ design makes it easier to start accurately, maintain control, and complete holes with fewer tool changes.

Note that results can vary with material and application. These bits are designed to offer versatility and reliability for a fast, controlled drilling experience, rather than guarantees. Pair with a compatible drill or driver and use appropriate feeds to maximize performance.