Wood Drill Bit Set Square-Hole Carbon Steel
High Quality
Free US Shipping
Hassle Free Returns
Stop ruined wood holes with precision square drilling
Create 0.04-inch-accurate square holes without rework or sanding — high-quality carbon steel, no manual chiseling needed
Why is this Wood Drill Bit Set perfect for your woodworking needs?
✔ 0.04-inch-accurate square holes for precise joints: Achieve perfectly sized square holes that fit mortise and tenon joints and furniture fittings exactly, eliminating the need for tedious reworking or sanding. This precision enhances the quality of woodworking projects while saving time.
✔ Durable high-quality carbon steel construction: Crafted from premium carbon steel with CNC milled surfaces, the drill bits stay sharp longer and drill effortlessly through both softwoods and hardwoods, ensuring consistent performance over extended use.
✔ Compatible with all standard drills and versatile usage: The set fits all standard and hammer drills, enabling a wide range of applications such as mortise holes, hinge recesses, and other precision woodworking tasks. Offers flexible options with 4 or 6 drill bits and an adapter mount.
Specifications
Material: High-quality carbon steel
Surface Treatment: CNC milled
Available Sizes: 1/4" (0.25 in), 5/16" (0.3125 in), 3/8" (0.375 in), 1/2" (0.5 in), 9/16" (0.5625 in), 5/8" (0.625 in), 3/4" (0.75 in)
Compatible Materials: All wood types from pine to oak
Frequently asked questions
Quick answers about ordering from Couje. More detail on our full FAQ page.
How much does shipping cost, and how long does it take?
Shipping is free on every order — no minimum. Orders are typically delivered within 4–12 business days (processing included), and every order includes tracking. Full details are in our Shipping Policy.
What is your return policy?
You can return items within 30 days of delivery. Once your return is received and inspected, we process your refund to the original payment method. See our Return & Refund Policy for the full process.
How do I track my order?
As soon as your order ships, we email you a tracking number. You can follow your delivery at any time on our Track Your Order page.
How can I reach customer service?
Email us at support@couje.com or use our contact form. Our team is available Monday – Friday: 09:00 AM – 05:00 PM EST and replies within 24 hours. Saturday – Sunday: closed.