Abracs Dry Diamond Core Bits are hollow, diamond‑tipped cutting cores designed for dry drilling in masonry, tile, brick, natural stone and reinforced concrete where water cooling is impractical. They remove a circular core rather than grinding a full hole, making them the preferred choice for creating clean, accurate openings for plumbing, electrical conduit, ventilation ducts and fixture fixings using angle grinders or compatible rotary drills.

Each core bit features industrial synthetic diamond grit embedded in a sintered metal‑bond segment brazed to a high‑tensile carbon steel barrel. The body is typically nickel‑plated to resist corrosion and ease debris removal. Common drive and thread options include ISO metric M14 for UK and European angle grinders and 5/8"-11 UNC for compatible arbors; these thread forms conform to accepted ISO/BS metric and UNC thread standards to ensure secure mounting and interchangeability with standard tool arbors and adaptors. The cutting crown is available in different bond grades (soft, medium, hard) and diamond concentrations to suit a range of materials from soft tiles to hard engineered stone.

Typical applications for Abracs Dry Diamond Core Bits include cutting holes for taps and showers in porcelain and ceramic tile, producing service penetrations through blockwork and brick, forming tidy openings in terrazzo and granite and fast removal of inspection ports in concrete. Industries that commonly use these cores are construction, plumbing, tiling and maintenance teams, civil contractors and specialist stonework installers.

Key benefits include prolonged cutting life from brazed/sintered diamond segments, consistent cutting speed across a range of substrates and improved corrosion resistance from plated steel barrels. The availability of different bond grades and diameters ensures correct selection for material hardness and grinder speed, reducing glazing and premature wear. The threaded drive compatibility means straightforward fitment to standard arbors and angle grinders without bespoke tooling.

Duchy Fasteners stocks a practical range of Abracs Dry Diamond Core Bits in common diameters from approximately 10 mm up to 125 mm, offered as single items or economy multi‑packs. If you need a specific thread, diameter or bond grade for a particular application, contact us to confirm available options and pack sizes.