Abracs Expert Range diamond tile drill bits for granite, porcelain, glass mosaic and ceramic. Self-sharpening multi-layer diamond tip, built-in wax coolant system, hex shank for quick-change chucks. Available in sizes from 6mm to 16mm including a handy 6/8mm Duo.
SIZE
Price
QTY
6mm
£15.95£19.14
7mm
£16.95£20.34
8mm
£17.95£21.54
10mm
£19.95£23.94
12mm
£20.95£25.14
14mm
£22.95£27.54
16mm
£24.95£29.94
6/8mm Duo
£19.95£23.94
Drilling through porcelain or granite without the right bit is a fast way to ruin an expensive tile, crack the substrate, or burn out a cheap diamond tip before you’ve even finished the first hole. The Abracs Expert Range Diamond Tile Drill Bit is built specifically for the harder stuff: dense porcelain, natural granite, glass mosaic, and ceramic — the materials that punish ordinary bits. Available from 6mm up to 16mm, plus a 6/8mm Duo option that saves you a tool change when you’re switching between fixing sizes mid-job.
The cutting end uses a multi-layered diamond tip that self-sharpens as it works through material. Rather than glazing over and losing cut efficiency like a single-layer tip tends to do, the matrix exposes fresh diamond particles as the outer layer wears, keeping the bit cutting cleanly throughout its life. For anyone who’s had a cheap tile bit slow to a crawl halfway through a bathroom wall, that distinction matters.
Abracs Expert Diamond Tile Drill Bit: The Wax Coolant System
Heat is the enemy of any diamond tile drill. Porcelain in particular conducts heat poorly, which means it builds up fast at the cutting point. Abracs addresses this with an integrated wax coolant system built into the bit itself. The wax absorbs heat generated during drilling and helps regulate temperature without needing a constant water feed. You can drill dry, which makes the bit genuinely practical for wall tiling jobs where water management is a nuisance. That said, a quick spray of water on the tile surface never hurts if you’re going through particularly dense material or drilling multiple holes in quick succession.
The body is premium steel, and the hex shank fits standard quick-change and SDS-style chucks without an adapter. It’s a small thing, but on a tiling job where you’re switching between a tile cutter, a drill, and a grout raker all afternoon, anything that removes unnecessary steps adds up. The Abracs Expert Range diamond tile drill bit is well suited to professional tilers, bathroom fitters, and general builders who fit tile regularly and want a bit that holds up across a full installation rather than just the first few holes.
Size Options and the 6/8mm Duo
Sizes run from 6mm through to 16mm. The 6/8mm Duo is worth a mention because it’s a genuinely useful format — two cutting diameters on a single bit, which covers most standard wall plug sizes without carrying an extra bit. If you’re tiling a bathroom and fitting accessories like towel rails and mirrors in the same session, the Duo saves you locating and swapping bits constantly. Simple idea, practical result.
Pro Tip: Keep your drill speed steady and let the diamond do the work — pushing too hard generates excess heat and will shorten the bit's life significantly, especially in dense porcelain where a light, consistent pressure outperforms brute force every time.
These bits are used wherever hard tile materials need to be drilled cleanly and accurately. That covers bathroom and kitchen tiling installations, fitting accessories through finished tile walls, drilling through granite worktops for tap holes, and working with glass mosaic sheets. They're equally at home in new-build tiling, refurbishment work, and commercial fit-outs where hard porcelain floor tiles need fixing points or service penetrations.
Professional tilers reach for diamond tile drill bits when the tile specification exceeds what a carbide tip can handle. The Expert Range sits at the better end of the market, making it appropriate for jobs where tile costs are high and getting the hole right first time matters.
Best For
Porcelain tiles
Granite and natural stone
Glass mosaic
Ceramic wall and floor tiles
Granite worktop tap holes
Tile accessory fixing points
Compatible With
Standard quick-change hex chuck drills
Cordless and corded drills
Variable speed drills
No SDS adapter required
Key Specifications
Sizes: 6mm, 7mm, 8mm, 10mm, 12mm, 14mm, 16mm, 6/8mm Duo
Multi-layered self-sharpening diamond tip
Integrated wax coolant system
Premium steel body
Hex shank fitting
Dry drilling capable
Not suitable for: Not suitable for use with SDS-only chucks without a hex adapter. Not designed for drilling through metal, timber, or masonry — use the correct bit type for those materials.
Mark your hole position clearly with a felt tip or use a tile drill guide to stop the bit wandering on a glazed surface. Start at low speed to establish the cut, letting the diamond tip bite before increasing to a steady working speed. Avoid bearing down hard — moderate, consistent pressure is more effective and kinder to the bit.
The wax coolant handles heat for most situations, but if you're drilling several holes in sequence through dense porcelain, applying a small amount of water to the tile surface between holes gives the bit extra protection. Once through the tile, ease off the pressure as you break through the back face to avoid chipping the tile edge.
Mark the hole position clearly — a felt tip works on most tile surfaces
Fit the bit into a standard hex chuck drill; no adapter required
If working on a smooth glazed surface, use a tile drill guide or stick a piece of masking tape over the mark to prevent wandering
Start at low speed to seat the cutting tip before increasing to a steady working speed
Apply moderate, consistent pressure — do not force the bit
For multiple holes in dense porcelain, apply a small amount of water to the tile surface between holes to manage heat
Ease off pressure as the bit breaks through the back face of the tile to avoid chipping
Clear dust from the hole and bit between holes if drilling through thick material
Can these bits be used dry, or do they need water cooling?
They can be used dry thanks to the integrated wax coolant system. For most standard tiling jobs — drilling a few holes for fixings or accessories — dry drilling is fine. If you're running through dense porcelain repeatedly, a splash of water on the tile surface between holes helps extend bit life.
Will these work on porcelain floor tiles, not just wall tiles?
Yes. Porcelain floor tiles are one of the primary applications. They tend to be denser and harder than wall tiles, so keep your speed steady and pressure moderate. The self-sharpening diamond tip is well suited to that kind of material.
What is the 6/8mm Duo option?
The Duo is a single bit that cuts both 6mm and 8mm diameter holes. It's useful when you're working with different fixing sizes on the same job and want to avoid carrying multiple bits. Practical for bathroom installations where you're fixing a mix of accessories and fittings.
Do these fit a standard cordless drill?
Yes. The hex shank fits any standard quick-change chuck, which covers the vast majority of cordless and corded drills. You don't need an SDS chuck or a special adapter.
Are these suitable for glass tiles?
Yes — glass mosaic is listed as a compatible material. Use a lower drill speed on glass and keep pressure light. The wax coolant helps here, but glass is unforgiving if you rush it.
The Abracs Expert Range Diamond Tile Drill Bit uses a multi-layered sintered diamond matrix bonded to a premium steel body. As the outer diamond layer wears, fresh abrasive is exposed, maintaining cut efficiency throughout the bit's working life. The integrated wax coolant is embedded into the bit construction, providing thermal regulation during dry drilling without requiring an external water supply. Hex shank fitment is compatible with standard quick-change drill chucks.
