3-8mm Pack Cobalt Drill Bit Set
⭐⭐⭐⭐⭐ 3,582+ Verified Reviews
Description
6PCS Cobalt Drill Bit Set (3–8mm) – M35 High-Speed Steel
Upgrade your toolkit with this professional 6-piece cobalt drill bit set designed for strength, precision, and long-lasting performance. This set includes the most востребованные размеры: 3mm, 4mm, 5mm, 6mm, 6.5mm, 8mm – exactly as shown in the photo.
🔩 Premium M35 Cobalt Steel
Made from industrial-grade M35 (6542) high-speed steel with 5% cobalt, these bits are significantly harder and more heat-resistant than standard HSS 4241 drill bits. Built for durability and extended use on tougher materials.
⚙️ 135° Split Point Design
The precision 135-degree split point tip prevents walking and ensures fast, accurate drilling without the need for a center punch. Fully ground spiral flutes reduce friction and heat for smoother, cleaner holes.
🛠 Wide Application
Perfect for drilling through:
• Stainless steel
• Carbon steel
• Cast iron
• Aluminum
• Metal sheets
• Wood
• Plastic
Ideal for home DIY, garage work, metal fabrication, and workshop projects.
📦 Set Includes (6PCS)
3mm
4mm
5mm
6mm
6.5mm
8mm
Compatible with most standard power drills and cordless drills.
Sharp cutting edges, high drilling efficiency, and reliable performance — this compact cobalt drill bit set is built to handle demanding jobs with precision and speed.
3-8mm Pack Cobalt Drill Bit Set
FAQ's
How long does delivery take?
Estimated delivery time is usually 7-12 business days after your order has been processed and shipped.
Can I return my order?
Yes. Contact us by email with your order number, and our support team will guide you through the return process.
What is your refund policy?
Eligible orders are covered by our 30-day refund policy. Refund conditions are explained in our Return & Refund Policy.
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Are ToolZone products high quality?
We carefully select practical, reliable products designed for everyday tasks, home projects, travel, and outdoor use. Each product page includes key details, specifications, and intended applications to help you choose confidently. If an item arrives damaged or does not meet the stated product information, contact our support team for assistance under our return and refund policy