2-1/2 Inch Dry Core Diamond Hole Saw for Brick & Concrete

• Materials: Concrete, brick, cinder block, stucco, foundation slabs, and natural stone.
• Tool Compatibility: Works with all standard 3/8" or 1/2" corded and cordless drills.
• Pro Series Tip: For a perfectly centered start, clamp a piece of scrap wood with a 2-1/2" hole over your target area to act as a temporary guide.
• Warning: Not for use on glass, mirrored surfaces, or reinforced concrete with rebar.

• Drill Mounting: This bit features a universal 3/8" shank that fits directly into any standard corded or cordless power drill. No specialized adapters or high-end core machines are required.
• Starting the Cut: Since this model does not include a mechanical guide, we recommend creating a simple guide template out of scrap wood. Alternatively, start the cut at a 45-degree angle to notch the surface, then slowly bring the tool upright to 90 degrees.
• Operating Technique: Maintain a steady speed between 400–500 RPM. Apply light, controlled pressure and let the sintered diamond teeth do the work.
• Heat & Dust Management: While designed for dry use, adding water will significantly reduce dust, keep the bit cool, and extend the overall life of the tool.
• Safety Note: Avoid contact with rebar. If rebar is encountered, stop drilling immediately to prevent damage to the sintered teeth.

• HVAC & Cooling: Ideal for drilling clean 2.5-inch openings for air conditioning refrigerant lines and insulated copper piping.
• Electrical & Utilities: Perfect for installing electrical conduit, junction box entries, and large utility cables in basement foundations.
• Ventilation: Sized appropriately for smaller exhaust vents and intake pipes in brick or stucco walls.
• Structural: Drilling holes for concrete floor posts, anchors, and fencing supports in blocks or pavers.

• Hole Diameter: 2-1/2 inches
• Cutting Depth: 2 inches
• Shank Type: 3/8 inch Universal Round Shank
• Construction: Solid Steel Body with Laser-Welded Sintered Diamond Teeth
• Locator Guide: Not Included (Use scrap-wood template)
• Use Type: Dry Core (Wet recommended for maximum life)

Q: Can I use this with my cordless drill?
A: Yes. The 3/8-inch shank fits all standard cordless and corded drills. No special adapter or SDS plus chuck is required.

Q: Do I need a pilot drill to start the hole?
A: No. Start the cut at a slight angle or use a guide made from a piece of scrap wood to keep the bit centered.

Q: Can I use this to drill through rebar?
A: No. Contact with metal or rebar can damage the diamond teeth. This bit is optimized for concrete, brick, and block only.

Q: Is water necessary?
A: While these sintered teeth handle heat well, using water is highly recommended to keep the bit cool, suppress dust, and maximize the number of holes you can drill.