Best 5/16 In. Black Oxide Drill Bit

Discover the Do it Best 5/16 in Black Oxide Split Point Drill Bit, engineered for precision and lasting durability. Crafted from premium high-speed steel and finished with a black oxide coating, this bit delivers clean, accurate holes through metal, wood, and plastic. The 135-degree split-point design minimizes wandering on contact, helping you start true from the first plunge. Whether you’re a professional contractor or a DIY enthusiast, it’s built to perform under demanding tasks.

Benefits of upgrading your toolkit: This drill bit brings enhanced accuracy, longevity, and versatility to every project, reducing rework and speeding up drilling tasks. Its robust construction holds up to frequent use in metalworking, woodworking, and plastic fabrication while maintaining precision.

• Bit Diameter 5/16 inch for exact hole sizing and compatibility with standard drill chucks across metal, wood, and plastic projects.
• Material & Finish: Black oxide coating on high-speed steel delivers improved durability and corrosion resistance for longer life in tough materials.
• Length & Shank: 4-1/2 inch overall length with a 5/16 inch shank supports deeper, wider reach in confined spaces.
• Tip Design: 135-degree split-point starts on contact with less walking, delivering clean, precise holes.
• Drilling Depth: 3-3/16 inch drilling depth enables deeper holes for connectors and through-holes in metal, wood, or plastic.

Why this drill bit stands out: Its combination of tough construction, precise geometry, and compatibility with common chucks makes it a versatile choice for any shop. Ideal for professional jobsites and home workshops, this single unit delivers dependable performance on metal, wood, and plastic tasks alike. Elevate your drilling accuracy with a trusted bit that keeps pace with your projects, and restock easily since it is sold as a single unit.