The MK Diamond MK Premium 1-inch (25mm) dry masonry core bit drills clean, round holes in soft brick and concrete block with a standard hand-held drill. No water supply is needed, which makes it a practical choice for small penetrations: anchors, conduit, small pipe and cable runs. Laser-welded construction and bar-slot cooling promote efficiency, reliability and safety, and a 10-inch overall length with 9-1/4 inches of drilling depth reaches through a standard block wall.
Use Cases
- Drilling holes in soft brick and concrete block with no water hookup
- Small conduit, cable and pipe penetrations
- Anchor and fastener holes in masonry walls
- Electricians, HVAC installers and handymen working with a hand-held drill
Specifications
- Model: MK Premium Dry Masonry Core Bit (MK Diamond part 158661)
- Diameter: 1 in (25 mm)
- Overall length: 10 in
- Drilling depth: 9-1/4 in
- Segment height: 7.5 mm
- Thread: 5/8 in-11 nut
- Construction: Laser welded with bar-slot cooling
- Cutting method: Dry
Frequently asked questions
Can I use this bit with a regular drill?
Yes. MK Diamond designs the dry core bits to attach to most hand-held drills through the standard 5/8-inch-11 threaded nut.
Does it need water?
No. It is a dry-cutting bit for soft brick and concrete block.
What is the drilling depth?
The bit is 10 inches long with a 9-1/4-inch drilling depth.
What is it not meant for?
It is designed for soft brick and concrete block. For harder materials, use a wet diamond core bit and a drill rated for wet coring.
What size is part 158661?
Part 158661 is the 1-inch (25 mm) size. MK lists the line up to 6 inches.
Discount Cleaning Products is an authorized MK Diamond dealer and a US-based supplier of coring and masonry tools. Contact us if you need help choosing the right bit size.
