The MK Diamond Crown 2-1/2-inch (63 mm) core bit is a professional grade crown rim core bit for prestressed and precast concrete. It is the kind of bit coring crews and precast plants reach for when a dense, heavily reinforced section needs a clean, round hole, and this size is a good match for mid-size mechanical and utility penetrations. It mounts on a 1-1/4 inch-7 thread.
Built for
- Coring prestressed and precast concrete members
- Precast plants and coring contractors who need clean round openings
- Mid-size mechanical and utility penetrations through dense reinforced concrete
Specifications
- Model: MK Crown professional grade crown rim core bit
- Diameter: 2-1/2 in (63 mm)
- Thread: 1-1/4 in-7
- Segment height: 7.5 mm, laser welded
- Drilling depth: 14 in
- Part number: 157794
Frequently asked questions
What is the MK Crown core bit for?
MK Diamond lists it as a professional grade crown rim core bit for prestressed and precast concrete.
What thread does the 2-1/2 inch size use?
Part 157794 has a 1-1/4 in-7 thread.
How deep can it drill?
MK Diamond lists a 14 inch drilling depth with 7.5 mm segments.
Does MK Diamond state wet or dry use?
The Crown product page does not state a wet or dry rating, so confirm your drilling setup before ordering.
Discount Cleaning Products is an authorized MK Diamond dealer with US-based customer service. Call or message us to confirm fit and arbor size before you order.
