The M25 Hole Cleaning Brush is a rotary wire brush specifically sized for cleaning 25 mm drilled holes prior to resin or chemical anchor installation. Its primary use is to remove dust, loose particles and drilling slurry from blind and through holes in concrete, brick and stone to ensure full contact between the substrate and the adhesive anchor.

Construction comprises a twisted-knot cylindrical brush head with stainless steel bristles (AISI 304 / EN 1.4301) mounted on a twisted high-carbon steel core. The bristles provide firm abrasion to dislodge dust without damaging sound concrete. The brush is supplied with a short threaded adapter manufactured to metric thread form (M8 × 1.25) in accordance with ISO 724 / DIN 13 so it can be fitted to standard rotary cleaning adaptors, extension rods or drill chucks. The stainless finish is bright and passivated to improve corrosion resistance when used on site.

Typical applications include cleaning drilled holes for chemical anchors, resin capsules and through-bolt installations in structural and non-structural fixings. It is used across construction, civil engineering, rail, utilities and mechanical & electrical installation sectors where reliable adhesive anchoring is required. The brush is suitable for use in concrete, blockwork, natural stone and masonry and is compatible with both one-component and two-component anchoring resins.

Key benefits include improved bond reliability through consistent hole cleaning, good corrosion resistance from the stainless bristles, and a robust twisted core that maintains bristle stiffness during repeated use. The M8 adaptor thread ensures broad compatibility with common rotary cleaning tools and drill-driven holders, helping site crews standardise tooling. Using the correct brush size reduces rework and increases anchor load performance by helping achieve the cleaning standards typically required by anchor system manufacturers.

Duchy Fasteners stocks the M25 Hole Cleaning Brush alongside a range of hole-cleaning brushes in other common diameters and pack quantities. Available sizes and pack options can be supplied individually or in multipacks to suit site and trade requirements. Contact us for current stock levels and ordering information.