This 70mm twist knot wire brush with an M14 thread is a compact, heavy‑duty powertool accessory for angle grinders, intended for aggressive cleaning and surface preparation. The twist knot construction binds multiple wires into tight knots around the brush hub, producing a stiff, high‑impact brushing action ideal for removing rust, scale, paint, weld spatter and corrosion from metal surfaces and for preparing small areas ahead of painting or welding.

The wheel has a 70mm diameter and is furnished with an M14 metric male thread to fit standard European angle grinder spindles; the M14 thread conforms to ISO metric thread form (ISO 261 / ISO 965). The head type is a knotted (twist) wire wheel and the drive is direct screw mounting to the grinder spindle. Wire construction is available in hardened high‑carbon steel for aggressive material removal and in stainless steel (AISI 304 option) where corrosion resistance is required. The knotted wires are heat‑treated for strength and wear resistance; users should always respect the brush’s marked maximum safe RPM and the host tool’s speed rating.

Typical applications include surface descaling, paint and coating removal, weld cleaning and edge blending in confined or recessed areas where larger wheels cannot reach. Industries that commonly use this style of brush include metal fabrication and welding shops, automotive repair and restoration, marine and ship repair (stainless option preferred), plant maintenance and construction. The compact 70mm size is particularly useful for spot work, hinge and joint cleaning, and removal of localized corrosion without excessive gouging of the base material.

Key benefits of the twist knot design are a concentrated, high‑energy brushing action, reduced wire loss compared with crimped brushes and the availability of stainless wire for improved corrosion resistance in coastal and marine environments. The M14 mounting provides broad compatibility with most European and UK angle grinders, making the brush a convenient replacement or upgrade for routine maintenance tasks.

Duchy Fasteners stocks the 70mm M14 twist knot wire brush individually and in trade packs; we also carry a wider wire brush range in multiple diameters and thread options — contact us for available sizes and pack quantities.