The MK Diamond MK Premium 6-inch (152 mm) dry masonry core bit is a hand-drill core bit for opening up soft brick and concrete block without a water feed. It is 10 inches long with a standard 5/8-11 threaded nut, so it attaches to most hand-held drills. Tradespeople use it to cut clean round openings for vents, pipes, conduit and fixtures.
Use cases
- Vent, duct and pipe penetrations. Cut round holes through soft brick and concrete block walls.
- Conduit and electrical openings. Open a clean hole for cable and conduit runs in block.
- Remodeling and repair work. Drill through masonry where a wet rig is not practical.
- Dry, hand-drill jobs. Work from a standard drill with a 5/8-11 threaded chuck connection.
Specifications
- Diameter: 6-inch (152 mm)
- Part number: 158710
- Length: 10 inches
- Thread: 5/8-11
- Segment height: 7.5 mm
- Drilling depth: 9-1/4 inches
- Minimum amps: 10
- Max/min RPM: 2500/600
- Construction: Laser-welded segments
Fit and compatibility
This is a dry-use core bit for soft brick and concrete block, as MK Diamond recommends. It has a 5/8-11 thread, so confirm that your drill or adapter accepts that thread. MK Diamond lists additional diameters in the same Premium dry bit family.
Getting the most from the bit
Match the bit to a drill with enough power for the diameter, using the minimum amp rating in the table above as your guide, and keep the bit running within its published RPM range. Let the segments do the cutting with steady, moderate pressure, back the bit out now and then to clear dust, and wear eye, hearing and respiratory protection. Follow the drill maker and MK Diamond safety guidance.
Frequently asked questions
What materials is the MK Premium dry core bit for?
MK Diamond recommends it for soft brick and concrete block drilling operations.
Do I need water to use it?
No. It is a dry masonry core bit. Follow the MK Diamond guidance for dry use and clear dust from the hole often.
What thread does it use?
It uses a standard 5/8-11 threaded nut, so it fits most hand-held drills that take that connection.
How deep can it drill?
The bit is 10 inches long with a 9-1/4 inch drilling depth.
About MK Diamond and your order
MK Diamond has built diamond blades, core bits and masonry saws for the construction and stone trades for generations. Discount Cleaning Products is an authorized dealer with US-based customer service, so you can confirm fitment with a real person before you order.
