Square Tenon Drill Bit Set CNC-Milled Carbon Steel 4-Piece
High Quality
Free US Shipping
Hassle Free Returns
Stop struggling with imprecise wood joints once and for all
Create precise square tenon holes in wood efficiently — carbon steel build, CNC-milled edges, chip removal design for smooth cutting without rework or excessive resistance
Why is this Square Tenon Drill Bit Set perfect for you?
✔ Durable performance with sharp CNC-milled cutting edges: The carbon steel construction ensures long-lasting durability while the CNC-milled edges produce clean, sharp square tenon holes, reducing the need for corrections and improving joint quality.
✔ Efficient chip removal design for faster drilling: The specialized chip removal feature lowers resistance during drilling, enabling smoother, quicker cuts that improve control and precision during woodworking.
✔ Comprehensive size range included: Includes four commonly used tenon hole sizes (0.252 in / ≈1/4", 0.315 in / ≈5/16", 0.374 in / ≈3/8", 0.5 in / 1/2"), ensuring compatibility with standard wood joint dimensions without needing extra purchases.
Specifications
Material: Carbon steel
Included sizes: 0.252 in / ≈1/4", 0.315 in / ≈5/16", 0.374 in / ≈3/8", 0.5 in / 1/2"
Compatibility: Fits most common drills via drill adapter holder sold separately
Intended use material: Wood and wood-based materials
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.