The Mexco DCXCEL 8 piece diamond core set covers the big diameters — 107mm and 152mm — that electricians, plumbers and builders reach for most. Laser welded castellated segments, four adaptors, pilot drill and drift key included. Everything in one carry case.
The Mexco 8 piece DCXCEL diamond core set is built around the two diameters that come up again and again on site: 107mm and 152mm. Whether you are dropping cables through a blockwork wall, breaking out for a soil pipe, or cutting back-box openings through a brick course, this mexco 8 piece dcxcel diamond core set gives you the right tool without rummaging through half a dozen separate orders. The laser welded castellated segments are the key detail here — the rooftop profile and high diamond grit concentration cut faster and stay on line better than a standard pressed segment core.
Mexco have been making diamond tooling long enough to know what tradespeople actually need in a kit. The DCXCEL range sits in the professional tier: not entry-level, not priced for a one-off job, but built for the kind of daily use that a plumber or electrician puts through their gear. The castellated rooftop segment design breaks the masonry plug into smaller pieces as it cuts, which reduces the torque load and makes for a cleaner bore. Less snatching, less effort, and the core tends to drop out cleanly rather than jamming solid in the barrel.
What the Mexco DCXCEL Core Set Includes
The eight pieces cover the full workflow, not just the cutting heads. You get both core drills, four adaptors spanning 80mm and 250mm lengths in both SDS and hex drive formats, a 10mm by 175mm A-taper pilot drill to keep you centred at the start of a cut, and a drift key for popping the slug out of the barrel. The case keeps everything together, which sounds obvious until you have spent ten minutes on a scaffold looking for an adaptor that rolled under a board. Each item in the kit can also be purchased individually from Mexco for restocking — no need to replace the whole set when one piece wears out.
Drill Motor Requirements
These core drills need a minimum 850W drill motor fitted with a slipping clutch. This is not a negotiable point. Running a laser welded dry core without a slipping clutch risks a serious snatch if the core jams, and the torque loads at 107mm and above are not trivial. A decent rotary hammer set to rotary-only mode with the appropriate adaptor is the standard approach on most jobs.
Dry core drilling keeps the job clean — no water, no slurry, no soaked floors. For masonry work indoors, that matters.
Pro Tip: Always start a new core drill with a light touch for the first few seconds to let the segment bed in — forcing full pressure immediately on a fresh barrel can glaze the diamond grit before it has a chance to open up, and you will wonder why your brand new core is cutting like a used one.
This set is aimed squarely at plumbers, electricians and builders who need to core through masonry on a regular basis. The 107mm diameter is a go-to for back boxes, smaller conduit runs and cable entry points through external walls. The 152mm barrel handles soil pipe penetrations, larger MVHR ducting, and structural openings through blockwork. Both sizes are used dry, which makes them practical for interior work where water supply is awkward or slurry would cause damage.
Suitable for use in brick, engineering brick, concrete block, aerated block, and similar dense masonry materials. The castellated segment design performs well on harder aggregates where a standard segment can struggle to bite.
Best For
Electricians coring cable and back-box openings
Plumbers cutting soil pipe and waste penetrations
Builders and general tradespeople working in masonry
MVHR and ventilation duct installations
External wall cable entry points
Compatible With
SDS drill motors via 80mm and 250mm SDS adaptors
Hex drive drill motors via 80mm and 250mm hex adaptors
Minimum 850W drill motor with slipping clutch
A-taper pilot drill included for centre alignment
Individual DCXCEL replacement parts available separately
Not suitable for: These are dry core drills and are not designed for wet or slurry cutting setups. They are not suitable for use in ceramic tile, glass, or natural stone — a dedicated wet diamond core would be the correct choice for those materials.
Fit the appropriate adaptor to your drill motor and attach the pilot drill through the core barrel. Mark your centre point clearly, position the pilot against it, and start the drill at a steady, moderate speed. Let the segment find its line before applying full pressure. Keep the drill square to the surface throughout the cut.
Once the core is through, use the drift key to eject the plug from the barrel. If the slug is particularly tight, a short tap on the drift key is usually enough. Do not overtighten the barrel onto the adaptor thread — firm hand-tight is sufficient and makes removal easier on site.
Fit the correct adaptor for your drill — SDS or hex — and check it is fully seated
Thread the pilot drill through the core barrel before attaching to the adaptor
Mark and centre-punch your drilling point on the masonry surface
Set your drill motor to rotary-only mode, no hammer action
Start the cut at moderate speed with light pressure to let the segment bite
Increase pressure gradually once the core has established a groove in the surface
Keep the drill square and steady throughout — wandering at the start widens the bore
Once through, withdraw the core drill and use the drift key to eject the masonry plug
Can I use these core drills with a standard rotary hammer drill?
Yes, provided it has a minimum 850W motor and a slipping clutch. Set the drill to rotary-only mode — hammer action is not used with core drills and will damage the segment. Use the SDS adaptor for SDS-plus or SDS-max chucks, or the hex adaptor if your drill takes hex shank tooling.
Can I buy replacement cores or individual parts for this kit?
Yes. Every item in the DCXCEL kit can be purchased individually from Mexco, so when a core wears out you replace just that piece rather than the entire set. This makes restocking straightforward once you are already using the system.
The DCXCEL core drills use a laser welded bond to attach the diamond segment to the steel barrel. This is a stronger joint than a sintered or pressed bond and holds up better under the dry cutting conditions these cores are designed for. The castellated rooftop segment profile increases the cutting surface contact and improves debris clearance from the bore, which helps maintain cut speed as the core deepens. Suitable for brick, concrete block and aerated block in dry conditions.
Core Drill Diameters
107mm, 152mm
Segment Type
Laser welded castellated rooftop
Cutting Method
Dry
Pilot Drill
10mm x 175mm A-taper
Adaptors Included
80mm SDS, 80mm Hex, 250mm SDS, 250mm Hex
Minimum Drill Motor
850W with slipping clutch
Kit Pieces
8
SKU
A11DCDKIT2
Brand
Mexco
Range
DCXCEL
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