Square Mortise Drill Bit Set Carbon Steel CNC-Milled
High Quality
Free US Shipping
Hassle Free Returns
Achieve clean woodworking joints without rough edges
Create precise square mortise holes in wood — carbon steel bits with CNC-milled cutting edges, chip evacuation for low resistance
Why is this square tenon drill bit set perfect for your woodworking projects?
✔ Sharp, durable cutting edges: Each drill bit is made from carbon steel that maintains sharpness even after repeated use, ensuring consistent clean and precise cuts every time.
✔ Efficient chip evacuation reduces resistance: The chip evacuation design minimizes cutting resistance, allowing faster drilling with better control and smoother results, speeding up woodworking tasks.
✔ Versatile size range for common mortises: Includes four common mortise sizes—0.252", 0.315", 0.374", 0.500"—covering a wide range of woodworking needs and compatible with most commercial drills via an adapter.
Specifications
Material: Carbon steel
Included sizes: 0.252", 0.315", 0.374", 0.500"
Compatibility: Fits most commercial drills via drill adapter holder sold separately
Suitable materials: 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.