1-3/8 Inch Vacuum Brazed Diamond Hole Saw – Extra-Deep Cut for Tile, Granite, Quartz & Glass

• Vacuum Brazed Diamond Rim: Thick industrial diamond coating for fast, chip-free cutting and long life on hard materials.
• 1-3/8 Inch Depth of Cut: Taller body drills through thick countertops, tile and slabs in one pass.
• Side Cooling Slots: Improve water flow and clear debris so the bit keeps cutting cleanly.
• Triangular 3/8 Inch Shank: Fits standard drills with no adapter and resists slipping in the chuck.

• Materials: Porcelain, ceramic, tile, granite, quartz, marble, natural stone and glass.
• Tool Compatibility: Standard corded and cordless drills and drill presses.
• Not For: Wood, metal, plastic or masonry block. Do not use hammer mode.

• Mark & Wet: Mark the hole position and spray or drip water on the work area.
• Start at an Angle: There is no pilot bit. Hold the drill at a slight angle and drill slowly to cut a small C-shaped groove, or use a drill guide or a scrap-wood template.
• Bring to Vertical: Slowly bring the drill upright and keep spraying or dripping water on the cut.
• Light Pressure: Let the diamonds do the work. Don't push hard, and dip the bit in water every 20–30 seconds.

• Kitchen Faucets: Standard 1-3/8 inch faucet holes in granite, quartz and marble countertops.
• Sink Accessories: Soap dispenser, sprayer and disposal air switch holes.
• Shower & Bath: Shower handle and valve stem holes in wall tile.
• Planters & Glass: Drainage holes in ceramic pots and holes in glass.

• Hole Diameter: 1-3/8 inches
• Depth of Cut: 1-3/8 inches
• Shank: 3/8 inch triangular
• Body: Solid steel
• Cutting Surface: Vacuum brazed diamond
• Pilot Bit: None (start at an angle or use a guide)
• Use Type: Wet drilling

Q: What is the difference between vacuum brazed and electroplated hole saws?
A: Vacuum brazed bits have a thicker, stronger diamond layer, so they cut faster and last up to 5x longer than electroplated bits.
Q: Is it compatible with my drill?
A: Yes. The 3/8 inch triangular shank fits standard corded drills, cordless drills and drill presses with no adapter.
Q: Do I need water?
A: Yes. Keep the cut wet the whole time to cool the bit, control dust and get a clean, chip-free hole.
Q: How do I start without a pilot bit?
A: Start at a slight angle to cut a small groove, then bring the drill upright. A drill guide or a scrap-wood template with a matching hole also works.
Q: How thick a countertop can it drill?
A: The 1-3/8 inch cutting depth goes through standard 3 cm granite and quartz countertops in one pass.