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

Overview

Discover the DEWALT Step Drill Bit Set, a compact trio designed to tackle metalworking tasks with precision and confidence. The three titanium nitride coated bits are engineered for longer wear life and dependable performance, making them a versatile choice for steel, aluminum, and other sheet materials. Designed for use with rotary drills and optimized for impact drivers, these bits balance power with control so you can focus on the project at hand.

What makes this set stand out

• 31 hole sizes span from 1/8 inch to 7/8 inch, enabling smooth step drilling across a wide range of applications
• Two flute spiral design promotes durable cutting and efficient chip removal for cleaner holes
• Split point tip starts on contact, helping minimize wandering and speed up initial drilling
• Laser engraved numbers enhance step visibility, letting you quickly identify the correct size
• 1/4 inch hex shank offers broad tool compatibility with many drills and drivers
• Engineered for optimized performance with impact drivers, delivering consistent results under load

Practical, real-world use

Whether you are setting up cabinet hardware, preparing metal panels for electrical work, or fabricating sheet metal, these bits provide a reliable range of sizes in a single compact set. The TiN coating helps reduce heat buildup and wear, while the split point and efficient chip flow support smoother starts and cleaner holes. The set’s wide size range reduces the need to swap bits mid-project, supporting steady workflow from planning through finishing touches.

In workshop or job-site environments, the combination of a robust coating, visible step markings, and a shank designed for versatile tool compatibility can help you stay productive. While results depend on material and technique, users may notice easier starts, more accurate hole sizing, and fewer interruptions caused by wear or tool changes.

Quick tips for best results

• Use moderate speeds and steady pressure to maximize tool life and hole quality
• Keep the work surface clean and allow proper cooling to prevent overheating