- Premium Quality: Crafted from durable 1045 high-carbon steel, our Tri-flute wood auger bit set offers exceptional sharpness, wear resistance, and a long lifespan—essential for woodworkers and DIY enthusiasts. - Versatile Sizes: The set includes six drilling diameters—1/2", 5/8", 3/4", 1", and 1-1/8", with a total length of 4" and a 1/4" grooved hex shank. Compatible with standard 1/4" quick-change chucks, these bits minimize slippage and ensure easy clamping, making them reliable for a wide range of applications. - Self-Positioning Tip: The right-handed conical self-tapping thread design enables precise placement, simplifying the initiation of holes and reducing drilling time. - Efficient Operation: Featuring a three-edge, three-cutting spike design paired with an extra-large chip flute, these wood auger bits excel at fast chip discharge and facilitate the creation of smooth, accurate holes. - Practical Applications: Ideal for woodworking projects, furniture assembly, and cabinetry, this auger bit set meets various drilling needs with efficiency and precision, ensuring that you achieve professional results every time. Perfect for both experienced woodworkers and those tackling home improvement projects.