Abracs Dry Diamond Core Bits are hollow, diamond-segmented cutting cores designed to bore clean circular holes in concrete, masonry, block, brick, terrazzo and other mineral-based materials without the need for water. Their primary use is for fast, accurate hole cutting where wet cutting is impractical or site conditions prevent the use of water, for example when cutting openings for pipework, conduits, sockets and service penetrations.

The bits are constructed from a high-strength alloy steel core tube with hot-pressed sintered industrial diamond segments welded to the rim. The diamond concentration and bond formulation are selected for dry cutting, giving a balance of cutting rate and segment life. Typical fittings supplied include standard M14 (ISO metric) or 5/8"-11 UNC arbour threads for use with angle grinders and core drill adaptors, with plain-shank pilot arbour options available for hand-held core drills. The body is treated with a corrosion-resistant finish to resist rust in site conditions. Manufactured under ISO 9001 quality-control processes and produced to the safety principles that apply to power-tool accessories and superabrasive products, these bits are suitable for use with machines that comply with relevant EN/BS standards for hand-held power tools.

Common applications include mechanical and electrical installations, HVAC and plumbing trades, general building and repair, and specialist contractors working on renovation or new-build concrete and blockwork. The product is favoured where dry working is required: inside buildings, in areas without water access or where water contamination is a concern.

Key benefits of Abracs Dry Diamond Core Bits are consistent cutting performance across a range of mineral substrates, good wear life from industrial diamond segments, and compatibility with common arbour fittings used by professionals. The dry-segment design reduces the need for water management, while the steel body and anti-corrosion finish maintain structural integrity on site. Available grades suit softer masonry through to hard concrete, allowing selection based on material and required life.

Duchy Fasteners stocks a broad range of Abracs Dry Diamond Core Bits in multiple diameters and lengths, supplied in single pieces or trade packs — please check the SKU for specific sizes and arbor fittings or contact us for bespoke pack quantities.