F-Connection Diamond Core Drill Bits

Designed Exclusively for Gunther Drilling Systems

Gunther F-connection diamond core drill bits are engineered specifically for use with Gunther Drilling Systems, where precision, cooling, and repeatability are critical. These drill bits are the foundation of what makes the Gunther system one of the world’s most effective solutions for small-diameter core drilling in stone, ceramic, porcelain, and glass.

The F-connection interface is a proprietary Gunther design that ensures precise alignment, secure coupling, and optimal water delivery when used with Gunther bench drilling systems and Multidrill water swivel setups.

Need exact dimensions? See our F-Connection Dimensions & Compatibility Guide for thread specifications, tolerances, and system compatibility details.

Why Gunther F-Connection Drill Bits Perform Differently

• Manufactured in-house in Idar-Oberstein, Germany
  Every drill bit is produced by Gunther using controlled processes and strict tolerances.

• Sintered diamond construction
  Diamonds are fully impregnated into the cutting rim using a proprietary sintering process for consistent cutting performance and long service life.

• Exceptional tool life
  Under proper drilling conditions, experienced operators can expect 500–800 holes per drill bit, depending on material and diameter.

• Core Ejector System
  Reduces clogging and improves chip evacuation during drilling.

• Gunther Alignment System compatibility
  Designed to eliminate backside blowout by allowing accurate drilling from both sides of the workpiece.

F-Connection Compatibility (Important)

These diamond core drill bits are designed exclusively for Gunther Drilling Systems.
They are not recommended for use in non-Gunther drilling systems due to the proprietary F-connection interface and internal cooling requirements.

If you are adapting a drill press for internal water cooling, refer to the Multidrill® Water Swivel System, which allows proper integration with Gunther F-connection tooling.

Available Sizes

Stock Size Drill Bits
Standard sizes are kept in inventory and typically ship within two business days.
Available in 0.5 mm increments from 0.7 mm to 8.0 mm
(e.g., 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm … 8.0 mm)

Custom Size Drill Bits
Custom diameters and specifications are available upon request.
For custom orders, please contact us to discuss your application and requirements.