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Walter 13F354 wire cup brush, 3 inch carbon steel knot twisted wires, threaded arbor, new condition

Walter Surface Technologies

Walter Surface Technologies 13F354 Wire Cup Brush 3 in Carbon Steel Knot Twisted Wire Cup

SKU CH-W9SJ-YSGG3

Knot-twisted carbon steel wires remove rust, scale, spatter and corrosion from steel surfaces at high rotational speeds

  • Product typeSanders & Grinders Accessories
  • Deburring and weld-edge cleaning on steel with knot-twisted carbon steel wires
  • Oil-hardened and tempered wires deliver fast, effective surface brushing
  • Threaded arbor enables secure mounting and smooth brushing action
  • Flare control extends brush life during heavy-duty use
  • Rated for high rotational speed on large steel surfaces

Wire Cup Brush for Surface Finishing

This Walter Surface Technologies wire cup brush is a power tool accessory built for deburring, weld edge cleaning, and removing rust, scale, spatter, and corrosion from steel surfaces. It is designed for metalworkers and fabricators who need an abrasive brushing cup for large surface preparation tasks. The knot-twisted carbon steel wires are oil hardened and tempered for fast, effective brushing action on steel.

Threaded Arbor Mount with Flare Control

The brush features a threaded arbor for easy mounting onto compatible angle grinders or sanders, ensuring a secure fit during operation. Its design includes flare control to maintain wire shape, which extends brush life compared to cups without this feature. The premium-grade wires are attached to a compact cup rated for high rotational speed, allowing efficient material removal on sizable steel areas.

Sustained High-Speed Brushing Performance

Under sustained load, the oil hardened and tempered steel wires retain their stiffness and cutting ability, resisting premature wear during extended cleaning or deburring sessions. The knot-twisted construction reduces wire fatigue and breakage when the brush runs continuously at rated speed. This durability makes it suitable for prolonged surface finishing work where consistent aggression is required.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 70% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameWalter Surface Technologies
Product typeSanders & Grinders Accessories

Questions about this item

What thread size does the 3 in cup brush need to fit my grinder?

The brush has a threaded arbor; check your angle grinder's spindle thread and match it to the brush before mounting.

What is the wrong way people install this knot-twisted cup brush?

Running the grinder above the brush's rated maximum speed or applying excessive pressure causes premature wire breakage and uneven wear.

When do I replace the carbon steel wires on this finishing brush?

Replace the brush when the knot-twisted wires become significantly shortened, bent, or when brushing action noticeably slows on steel surfaces.

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