Abracs Dry Diamond Core Bits are rotary cutting tools designed to bore clean circular holes through hard building materials where wet cutting is impractical or forbidden. Their primary use is for dry coring of concrete, blockwork, brick, terracotta and natural stone when water cannot be used—for example in retrofit, electrical and plumbing installations, through-wall services and structural test sampling.

Each core bit comprises a hardened steel body with industrial diamond grit held in a sintered/vacuum-brazed segment. Diamond grit grades typically used are in the 40/60–60/80 mesh range for general-purpose masonry cutting; bonds are selected to balance wear rate and cutting speed in dry applications. The segmented rim design incorporates gullets to clear dust and maintain airflow during cutting; turbo and continuous rim variants are available where finer edge finish is required. Finish is an uncoated steel shaft with anti-corrosion treatment on request. These core bits are manufactured under ISO 9001 quality management and to applicable EN/ISO standards for bonded abrasives and power-tool accessories.

Thread and drive options cover common European and international fittings: standard M14 thread for angle grinders, 5/8"-11 UNC for North American arbors, and versions compatible with SDS-plus or straight shank arbors via adaptors. Head type is a cylinder with a segmented diamond rim; pilot drills and arbour adaptors may be supplied to suit the chosen drive. Users should follow tool manufacturer recommendations for rotational speed and intermittent cutting to avoid overheating during dry use.

Typical industries making regular use of Abracs Dry Diamond Core Bits include construction, utilities, HVAC, electrical contracting, plumbing, glazing and flooring trades. The bits are particularly effective on reinforced concrete and masonry where a fast, dust-managed dry solution is required. Key benefits include the wear resistance of industrial diamond, long life on abrasive materials, reduced need for water on-site, and compatibility with standard angle grinders and coring rigs when the correct arbor is chosen.

Duchy Fasteners stocks a wide range of Abracs dry diamond core bit sizes, commonly from 12 mm up to 152 mm diameters, available as single units or multi-packs. Please contact us for specific size, thread and pilot combinations to suit your application.