Wire cup brush MILWAUKEE S6 29x28x72 mm steel twisted 0.35 mm, set of 3

The Milwaukee wire cup brush S6 with twisted steel bristles (29×28×72 mm, 0.35 mm wire) is designed for mechanical surface preparation and cleaning on ferrous materials. Supplied as a set of three, this brush fits compatible angle grinders and rotary tools and is intended for tasks such as rust and paint removal, deburring, weld cleaning, and general metal surface conditioning. The compact cup shape and twisted-wire construction provide aggressive metal removal while maintaining structural stability during use.

Advantages

Twisted steel bristles with a 0.35 mm diameter ensure efficient material removal and long bristle life under typical workshop loads. The cup form concentrates brushing action for consistent coverage of flat and contoured surfaces. Sold as a set of three, the brushes offer ready replacements and reduce downtime. The design is compatible with common angle grinders and rotary tools used in metalworking and maintenance.

Suitable for

• Removing rust and old paint from steel surfaces
• Deburring edges and removing flash from fabricated parts
• Cleaning weld seams and heat-affected zones
• Preparing metal surfaces before painting or coating

When it may not be suitable

This twisted steel wire cup brush is intended for use on ferrous metals and aggressive cleaning tasks; it is not suitable for delicate surfaces, soft metals such as aluminum if surface damage must be avoided, or for finishing tasks that require a fine or polishing result. Use on non-ferrous materials can cause surface marring and should be avoided if preservation of the substrate is required.

Key specifications

• Brush type: cup brush with twisted steel wire
• Bristle material: steel
• Bristle diameter: 0.35 mm
• Overall dimensions: 29 × 28 × 72 mm
• Quantity: set of 3 brushes
• Intended tools: compatible with standard angle grinders and rotary tools

How to use

Fit the brush securely to a compatible angle grinder or rotary tool according to the machine manufacturer’s instructions and ensure the arbor and locking nut are correctly installed. Use appropriate machine speed within the brush’s rated limits and apply steady, moderate pressure—let the bristles do the work rather than forcing the tool. Move the brush across the surface evenly to avoid gouging and work in overlapping passes for consistent results. After use, inspect the brush for wear and replace when bristles are excessively worn or deformed.

What to consider before purchase

• Compatibility with your angle grinder or rotary tool arbor size and mounting system
• Suitability for the material you will process (steel vs. non-ferrous metals)
• Required aggressiveness of brushing (twisted wire is more aggressive than crimped wire)
• Personal protective equipment needs (eye, face, hand, and respiratory protection)

Usage recommendations

Use eye protection, a face shield, gloves and a dust mask when operating the brush. Select a lower feed pressure for thin or heat-sensitive sections, and replace brushes in sets or pairs to maintain balanced operation on the tool. Store brushes in a dry place to prevent corrosion of the wire filaments.