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  • Q 1. What are HELITUF Internal Brushes used for?

    A. These brushes are designed for:
    Cleaning internal bores and tubes
    Removing rust, burrs, paint, and carbon deposits from holes
    Surface preparation for welding, bonding, or coating inside narrow cavities

  • Q 2. What materials are used in the brush wires?

    A. Crimped Stainless Steel Wire (SS) – Corrosion-resistant, suitable for delicate metal surfaces
    Crimped Osborn AB Wire – Osborn’s proprietary alloyed steel wire, designed for aggressive cleaning without compromising tool life

  • Q 3. Can these brushes be used in stainless steel or aluminium bores?

    A. Yes, stainless steel wire brushes are ideal for use on stainless steel, aluminium, or non-ferrous metals to avoid contamination.
    AB wire brushes are better suited for ferrous materials due to their higher abrasion strength.

  • Q 4. Are these suitable for manual use or machine operation?

    A. They are best used in rotary tools or power drills. Hand use is not recommended due to their small diameter and rigidity.

  • Q 5. What are the typical applications?

    A. Deburring precision machined holes
    Cleaning hydraulic or pneumatic cylinders
    Polishing inner pipe welds
    Mold and die cleaning
    Maintenance of automotive and aerospace components

  • Q 1. What does the specification Ø13x25x89mm mean?

    A. Ø13mm – Brush head diameter
    25mm – Brush length (active bristle area)
    89mm – Overall brush length
    This sizing ensures compatibility with confined and precision internal applications.

  • Q 2. What is the shank size and material?

    A. The shank is Ø3.4mm steel, designed to fit die grinders, power drills, and rotary tools with matching collet/chuck sizes.

  • Q 3. What’s the difference between 0.13mm and 0.20mm wire thickness?

    A. 0.13mm wire – Finer bristles for delicate or detailed work
    0.20mm wire – Slightly stiffer for more aggressive cleaning of tougher surfaces

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