Step Bits

Professional Step Bits & Unibits for Precision Metal Drilling

For electrical, HVAC, and metal fabrication professionals, the step bit is an indispensable tool for creating clean, multi-sized holes without constant bit changes. At Ohio Power Tool, we offer a curated assortment of high-performance step bits (also known as unibits) engineered for durability and precision in sheet metal, plastic, and thin-gauge alloys. While we are a leading supplier in the Midwest, we ship our professional inventory nationwide, providing contractors across the U.S. with the trusted brands they depend on most, including Milwaukee, DeWalt, Klein Tools, and Greenlee.

Versatile Multi-Diameter Drilling Solutions

The conical, graduated design of a step bit offers unique advantages over traditional twist bits, particularly when working in thin materials:

• Single-Bit Efficiency: Drill multiple hole diameters with a single tool, significantly reducing the weight of your tool bag and the time spent swapping bits during electrical panel, junction box, or conduit work.
• Self-Starting Tips: Our professional-grade bits feature optimized split-point or rapid-strike tips that prevent "walking" on smooth metal surfaces, allowing for accurate hole placement without a center punch.
• Integrated Deburring: As the bit transitions to the next step, it naturally smooths the edge of the previous diameter, creating burr-free holes that are ready for immediate cable, pipe, or fitting installation.

Industrial Features for National Fabrication Standards

From industrial control cabinet builds in the Northeast to HVAC installations in the Southwest, Ohio Power Tool provides the technical specs required for high-volume use. We stock options with dual-flute or spiral geometry for faster chip evacuation and cooler operation, preventing the bit from binding or losing its temper during repetitive drilling. Our premium step bits feature permanent, easy-to-read laser-etched markings so you can confidently identify hole sizes even after heavy use. For impact driver compatibility, we offer impact-rated hex shanks engineered to handle peak torque loads without snapping. Additionally, many of our bits feature Cobalt or Titanium-Aluminum-Nitride (TiAlN) coatings, extending tool life by up to 10x compared to standard high-speed steel when drilling through stainless steel.

Expert Selection & Nationwide Delivery

Don't compromise on precision when working with thin-gauge materials. Ohio Power Tool maintains a focused collection of individual step bits and multi-piece unibit sets in our Columbus, Ohio showroom for local same-day pickup. We also offer fast, reliable shipping to all 50 states, ensuring that whether you are outfitting a local service van or a major fabrication shop across the country, you have the specialized equipment needed to achieve a professional finish on every project.

Upgrade your electrical and sheet metal workflow by pairing these bits with our cordless knockout sets, heavy-duty magnetic drill presses, and cutting fluids.