Faithfull 8.5mm cobalt drill bit for heavy-duty use in steel, titanium & more. DIN 388 compliant with 135° split point.
The Faithfull Professional Cobalt Jobber Drill Bit is engineered from M35 HSSE grade steel with 5% cobalt content, delivering exceptional heat resistance and superior cutting performance. These bits are precision fully ground and feature a 135° non-slip split point for accurate centring, ensuring high-precision tolerances and geometric accuracy in line with DIN 388 standards.
Designed for heavy-duty industrial applications, these cobalt drill bits cut faster and last longer, making them ideal for drilling through hard materials such as:
Each bit comes pre-packed for convenience and is ready for immediate use, ensuring reliability and performance in demanding work environments.
Free standard delivery on US mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For defective items, contact us within 14 days for a replacement or refund.
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