Diamond Tile Drill Bits – M14 Threaded for Angle Grinders | Porcelain, Ceramic, Stone
⚙️ Fast-Cutting, Long-Life Tile Core Bits for Plumbing & LED Cut-Outs

Our M14 Diamond Tile Drill Bits deliver fast, clean cutting performance even on hard porcelain tiles and natural stone surfaces. Designed for angle grinders and polishers, these robust tile core bits come in a wide range of sizes—from 6mm to 117mm—ideal for LED lighting cut-outs, plumbing pipework, and fixing bolts.

Built with vacuum-brazed premium diamond segments, these bits are engineered to cut through dense porcelain, ceramics, gres, marble, granite, and more. Whether you’re installing bathroom downlights, drilling sanitary fittings, or fitting extractors, this range has you covered.

🔧 Key Applications:

• Recessed LED light fittings (IP65/IP67 rated)

• Bathroom and kitchen plumbing outlets

• Extractor fan cut-outs (e.g., 4-inch ducting)

• Wall plugs, fixings, and expansion bolts

• Suitable for porcelain, ceramic, marble, granite, and clay tiles

🛠️ Product Features:

• Premium Diamond Tips – Cuts through hard porcelain with ease

• Vacuum Brazed – Durable bond for long tool life

• M14 Female Thread – Fits most 115mm+ angle grinders & rotary polishers

• 40mm Core Depth – Suitable for most tiles and wall panels

• 10mm Deep Diamond Segment – Extended performance on dense material

• Wax-Filled Cooling (6–10mm) – Self-lubricating for smaller diameter bits

• Spanner Flats – For easy removal from the tool

• Dry Use Recommended, Water Cooling Optional – Extend life when safe

🔢 Available Sizes:

• Small Fixings: 6mm, 8mm, 10mm, 14mm (ideal for sanitary bolt holes)

• Plumbing / Wall Plugs: 16mm, 20mm, 25mm, 32mm, 40mm

• LED Cut-Outs: 55mm, 65mm, 70mm, 83mm, 90mm, 100mm, 117mm

Note: Always double-check LED manufacturer cut-out specs before drilling.

💡 Tips for Best Results:

• Use a wooden V-guide to help accurately start the hole

• For thick tiles, pause and let the drill bit cool between cuts

• Practise on scrap tile if using dry for the first time

• Water cooling can help extend tool life, but use only where safe

📦 Perfect For:

• Electricians installing bathroom LED spotlights

• Plumbers working on pipes, taps, and sanitaryware

• Tilers & Fitters cutting clean holes in porcelain and natural stone

• DIYers updating bathrooms and kitchens

🔍 Need to Drill Through Double Walls or Thick Slabs?

Pair with our extended adaptors and pilot guide drills for masonry core drilling. See our full range of diamond accessories for compatibility.

Also Available: We supply smaller tile drill sizes down to 5mm in both wet and dry use designs.