Undercut anchors

KEIL Undercut Anchor

KARL Undercut Anchor

KARL® stop drill bit

522 900 ---

Carbide drill bit

further dimensions on request

Product information

  • The KARL® drill bit made of carbide is available in the respective length, matching the KARL undercut anchor.
  • The KEIL drilling technology is a guarantee for optimally short drilling times, long service lives and exact drill hole geometry.
  • The KARL® façade drill can be replaced in a resource-saving way by removing it from the stop and replacing it with a new KARL® façade drill.
  • The KARL® façade drill is clamped with the associated stop in a receptacle of a cordless drill or a CNC machine.


  • Fiber concrete
  • Fiber cement
  • High-pressure laminate (HPL)
  • Compressed fiberboard

We would be happy to test the usability of our undercut anchor in your material as well.

Instructions for use

  • Application according to KARL assembly instructions.
  • The drill hole depth is ensured by using the KARL depth stop.
  • For use on the construction site, it is recommended to use a cordless screwdriver.
  • In the case of industrial prefabrication, the drill can also be clamped in a CNC machine without the KARL depth stop.

KEIL Fasteners

KEIL reveal attachment sets

Drilling tools

Diamond tipped façade drill bits

Carbide tipped façade drill bits

Drilling technology

Drilling machines

Machine Accessories

Spare parts

Assembly aids

Depth control guide

Assembly aids

to the