1-3/8 Inch Masonry Diamond Hole Saw – Dry Core for Concrete, Brick & Stone

• Sintered Diamond Teeth: Industrial-grade diamonds are sintered into the cutting teeth, laser-welded to the steel body, so they stay locked in place under load and keep cutting as they wear.
• No Pilot Bit Needed: Start at an angle or use a scrap-wood template for clean edges in concrete, brick, block and stone.
• 2-Inch Cut Depth: Taller body passes through standard block and masonry walls in one pass.
• No-Slip 3/8 Inch Triangular Shank: Flat-sided shank grips securely in your drill's chuck, preventing slipping and wobble.

• Materials: Concrete, brick, concrete block, cinder block, stucco, pavers, granite, quartz and natural stone.
• Tool Compatibility: Works with standard 3/8" or 1/2" corded and cordless drills.
• Tip: This size does not include a guide. We recommend making a template from scrap wood with a matching hole to position the hole saw.
• Not Recommended For: Glass, mirrors, aquariums or delicate decorative tile.

• Drill Mounting: The 3/8 inch triangular shank fits directly into any standard corded or cordless drill. No adapter needed.
• Starting the Cut: There is no pilot bit, so start at a 45-degree angle to notch a half-moon groove, then slowly raise the drill to 90 degrees. A scrap-wood template with a matching hole also works.
• Operating Technique: Use a steady, moderate speed with light pressure and let the diamond teeth do the cutting. Do not use the hammer setting.
• Heat Management: It is built for dry use, but a wet sponge or a small stream of water keeps the bit cooler and cuts dust.
• Safety Note: If you hit rebar, stop drilling to avoid damaging the diamond teeth.

• Plumbing & HVAC: Ideal for 1-inch pipe sleeves, radiator pipes, and running PEX or copper supply lines through exterior walls.
• Electrical Utilities: Entry points for 1-inch conduit and service cables through brick and block.
• Bathroom & Kitchen: Openings for grab bars and fixtures in granite, quartz, marble and other stone.
• Masonry & Anchoring: Clean passages for anchors and exterior utility connections through brick, stucco and slate.

• Hole Diameter: 1-3/8 inches
• Cutting Depth: 2 inches
• Shank Type: 3/8 inch triangular
• Construction: Sintered diamond teeth laser-welded to the steel body
• Drill Guide: Not included (we recommend a scrap-wood template)
• Use Type: Dry or wet core
• Hammer Mode: Do not use

Q: Can I use this bit with a regular cordless drill?
A: Yes. The 3/8 inch triangular shank fits any standard 3-jaw chuck. You do not need an SDS or rotary hammer drill.
Q: Is water cooling required?
A: No. This is a dry core bit. Using a little water extends bit life and reduces dust in very hard material.
Q: Can I use hammer mode?
A: No. Hammer mode can crack the diamond teeth. Use rotary mode only.
Q: How deep can I drill?
A: The bit cuts 2 inches deep. For thicker walls, break out the core and continue drilling.