1-3/8 Inch Diamond Drill Bit with Pilot - Porcelain & Tile Hole Saw

Materials: Tile, porcelain, granite, quartz, marble, ceramic, glass (without the pilot)

Applications (Sized for 1‑3/8 inch holes): Countertop faucet holes, soap dispenser openings, RO system faucet installations, and medium‑small plumbing penetrations.

1. Mark & Secure: Mark your center point on the tile. Use the included pilot drill bit to create a shallow 1/8-inch guide ring.
2. Remove the Pilot: For best results and to prevent binding, remove the pilot bit after creating the guide ring. The diamond hole saw will use this ring to stay on track.
3. Drill at Low Speed: Using a standard drill with a 3/8 inch chuck, apply steady, light pressure. Use a low RPM setting (300-500 RPM) and keep the area lubricated with water for cooling and dust control.
4. Complete the Cut: Continue drilling until you cut through the material. The diamond grit does the work—let the tool's weight provide the pressure for a clean, precise finish.

Countertop faucet installations
Soap dispenser openings
RO filter faucet holes
Kitchen and bathroom sink area upgrades
Tile and stone backsplash penetrations
Shower fixture openings requiring a 1‑3/8 inch diamete

Diameter: 1‑3/8 inch
Type: Diamond Drill Bit
Shank: Standard 3/8 inch
Body Material: Solid steel
Cutting Surface: Triple‑layer industrial diamond coating
Pilot Bit: Removable locator pilot
Color: Chrome
UPC: 850004328705
EAN: 0850004328705
Condition: New

Q: What materials can this diamond hole saw cut?
A: This bit is engineered for hard, brittle materials including ceramic tile, porcelain tile, marble, quartz, granite, and slate. It is not designed for wood, metal, or plastic.

Q: Is it compatible with my drill?
A: Yes. It features a standard 3/8-inch round shank, making it compatible with most standard corded drills, cordless drills, and drill presses. No special adapter is needed.

Q: Why should I remove the pilot drill bit?
A: The pilot bit's sole purpose is to create a small starter guide ring. Removing it prevents the bit from binding in the material, reduces friction and heat, and allows the diamond core to cut more efficiently for a smoother, faster result.