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Product Summary

The Klutch 2-1/2in. Twisted Knot Cup Brush is a coarse (0.020in.) wire wheel with a 5/8in.-11 hub and 2 adapters to fit just about any angle grinder on the market. 5/8in.-11 threaded hub has 2 hub adapters (M10 x 1.25 and M10 x 1.5). 12,500 max. RPM.

What's Included

    (1) Cup brush (2) Adapters

Features + Benefits

  • Aggressive Twisted Knot Wire Design Tightly twisted wire knots deliver powerful cleaning action for fast removal of rust, weld spatter, paint, corrosion, and heavy surface buildup.
  • Coarse 0.020in. Carbon Steel Wire Built for demanding surface prep and restoration work where lighter-duty brushes can’t keep up, helping reduce cleanup time on tough metalworking jobs.
  • Compact 2-1/2in. Diameter for Precision Cleaning Smaller brush size improves maneuverability and control in tight spaces, corners, weld seams, and hard-to-reach areas. Users often prefer smaller cup brushes for more precise grinder work.
  • Cup Brush Shape Maximizes Surface Contact Maintains aggressive brushing engagement across flat and contoured surfaces for more efficient material removal and consistent cleaning performance.
  • Heavy-Duty Construction for Longer Brush Life Twisted knot wires resist premature wear and wire fatigue during aggressive grinder applications, helping extend service life in demanding environments. A Northern Tool customer review noted the twisted wire style “far outlast[s] the others” during restoration work.
  • Universal Angle Grinder Compatibility ? Features a 5/8in.-11 threaded hub plus included M10 x 1.25 and M10 x 1.5 adapters to fit most popular angle grinders right out of the box.
  • 12,500 RPM Rated Performance Engineered for high-speed grinder operation, delivering stable, dependable cleaning power for fabrication, maintenance, and restoration applications.
  • Ideal for Weld Cleanup & Heavy Surface Prep Quickly removes oxidation, scale, old coatings, and debris while preparing steel and iron surfaces for welding, painting, or refinishing.
  • Built for Fabricators, Welders & Restoration Pros Durable industrial-style construction stands up to repeated use in automotive restoration, metal fabrication, shop maintenance, and heavy-duty cleanup projects.

Key Specs

AttributeSpecification

item#

42216

Brand

Klutch

Manufacturer's Warranty

wear item, no warranty

Ship Weight

0.82 LB

Wheel Diameter

2.5 in

Arbor Size

5/8
AttributeSpecification

Wheels (qty.)

1

Grit

Coarse

Max. RPM

12,500

Thread Size

11 TPI

Bristle Type

Knotted

Warranty

Manufacturer's Warranty

wear item, no warranty