A four-piece diamond tile core drill kit from Mexco, designed for hard porcelain and ceramic tiles. Wax-cooled, no water needed. Fits angle grinders via M14 thread, with an adaptor included for use with standard drills.
The Mexco 4 Piece Tile Core Drill Kit is built for anyone who regularly drills through hard porcelain, ceramic, or natural stone and wants clean, professional results without the mess of water cooling. It comes with four diamond-tipped core drills — 6mm, 7mm, 8mm, and 10mm — covering the most common fixing and outlet sizes you’ll encounter on a tiling job. No improvising, no missing sizes.
What sets this kit apart is the wax-cooled system. Each drill bit contains a wax-filled core that melts under the heat of cutting, lubricating and cooling the diamond tip as it works through the material. That eliminates the need for a water feed, which is a genuine advantage when you’re working around electrics, on finished walls, or anywhere that a puddle of water would cause problems. It keeps the working area dry and the process straightforward.
Where the Mexco Tile Core Drill Kit Earns Its Place
These bits are primarily designed to fit angle grinders via the M14 universal thread, which is the standard fitting on most grinders used on site. An M14 to hex adaptor is included in the kit, so you can also run them through a high-speed drill if that suits the job better. The carry case keeps everything organised between jobs, which sounds like a small thing until you’ve spent ten minutes looking for a single drill bit at the bottom of a van.
Diamond-tipped bits cut cleanly through materials that would destroy standard masonry bits in seconds. Porcelain in particular is notoriously hard to drill without cracking or chipping, and the wax lubrication helps maintain a controlled cut rather than letting heat build up and cause damage. The result is a cleaner hole with less risk of ruining an expensive tile.
What’s in the Kit
The Mexco 4 piece tile core drill kit includes a 6mm, 7mm, 8mm, and 10mm diamond tile drill bit, an M14 to hex adaptor, cooling wax, and a carry case. Everything you need to get started is in the box. For tilers, bathroom fitters, and anyone doing a kitchen or wet room installation, this is a practical and well-thought-out set that covers the range of drilling tasks that come up most often on the job.
Pro Tip: Run the drill at a steady, moderate speed rather than pushing hard — diamond bits cut through friction and heat management, not brute force, and rushing will wear the tip prematurely.
These diamond tile core drills are used wherever precise, clean holes are needed through hard ceramic or porcelain tiles, as well as natural materials like marble, granite, and slate. Typical applications include drilling cable and pipe penetrations through wall tiles in bathrooms and kitchens, creating holes for shower fixtures, tap backs, and outlet boxes, and fixing into tiled surfaces without cracking the surrounding material. They're a standard tool for tilers, bathroom fitters, and general builders working on wet room or kitchen installations.
Best For
Hard porcelain tiles
Ceramic tiles
Marble and granite
Natural slate
Shower and bathroom installations
Kitchen tile penetrations
Compatible With
M14 thread angle grinders
High-speed drills (via included hex adaptor)
Standard site angle grinders
Key Specifications
Sizes: 6mm, 7mm, 8mm, 10mm
Diamond-tipped cutting edge
Wax-filled core for dry cutting
M14 universal thread
M14 to hex adaptor included
Supplied in carry case
Cooling wax included
Not suitable for: Not intended for use on standard brick, block, or concrete without tile. These are diamond tile drills optimised for hard decorative materials — using them on rough masonry will wear the tips quickly and is not what they are designed for.
Fit the appropriate drill bit to your angle grinder via the M14 thread, or attach the hex adaptor if you're using a standard drill. Mark your hole position clearly and, where possible, use a tile drilling guide or a small amount of putty around the hole to hold a pool of wax in place during the cut.
Start at a low angle to create an initial seating groove, then bring the drill perpendicular to the tile surface. Apply steady, consistent pressure without forcing the bit. The wax core will melt and flow as heat builds, keeping the tip lubricated. Let the diamond do the work. Reduce pressure slightly as you break through the back of the tile to avoid chipping the exit point.
Mark the hole centre clearly on the tile surface
Select the correct drill bit size for your fixing or outlet
Attach the bit to your angle grinder via M14 thread, or fit the hex adaptor for drill use
Apply a small amount of additional cooling wax around the cutting area if needed
Start at a shallow angle to create an initial groove, then straighten to perpendicular
Apply firm, steady pressure at a moderate speed — do not force the bit
Allow the wax to melt and lubricate naturally as the cut progresses
Ease off the pressure as the bit approaches the back face of the tile to prevent chipping on exit
Do I need to use water when drilling with these bits?
No. The wax-filled core inside each drill bit melts as it heats up during cutting, providing the lubrication and cooling that would normally require a water feed. This makes them practical for use on finished walls where water would cause damage or create a hazard near electrics.
Can I use these with a standard cordless drill rather than an angle grinder?
Yes. An M14 to hex adaptor is included in the kit specifically for this purpose. An angle grinder is the primary intended tool, but a high-speed drill works well for smaller sizes and situations where a grinder is impractical.
The Mexco 4 Piece Tile Core Drill Kit uses sintered diamond-tipped cutting edges designed to work through hard man-made and natural decorative materials. The wax-filled cooling system is built into the core of each bit, removing the need for external water cooling. The M14 thread is the industry-standard fitting for angle grinders, and the included adaptor extends compatibility to hex-chuck drills.
SKU
TDXCELKIT4
Brand
Mexco
Sizes Included
6mm, 7mm, 8mm, 10mm
Thread Type
M14 universal
Adaptor Included
M14 to hex
Cooling Method
Wax-filled core (dry cut)
Tip Type
Diamond
Compatible Tools
Angle grinders, high-speed drills
Kit Contents
4 drill bits, M14 to hex adaptor, cooling wax, carry case
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