Wire cup brush MILWAUKEE S6 22×28×72 mm stainless steel knotted 0.35 mm, 3 pcs

MILWAUKEE S6 22×28×72 mm stainless steel knotted wire cup brush (0.35 mm), pack of 3, is a tool attachment designed for surface preparation on metal. The brush features knotted stainless steel filaments that provide aggressive material removal for tasks such as rust and paint removal, deburring edges and general cleaning of welds and metal components. It is intended for use with angle grinders or compatible rotary tools that accept this cup brush size and mounting configuration.

Advantages

The stainless steel knotted wires (0.35 mm) deliver high cutting performance and long filament life when working on steel and other ferrous metals. The cup shape offers stable contact with flat and slightly contoured surfaces for even material removal. Supplied as a pack of three, this set reduces downtime by providing spare brushes for continued work. The design balances aggressive cleaning with resistance to filament loss under heavy use.

Suitable for

• Rust and scale removal on ferrous metal surfaces
• Paint and coating stripping from steel and iron components
• Deburring and edge blending after cutting or welding
• Cleaning weld seams and removing slag
• Surface preparation before painting or coating

When it may not be suitable

This knotted stainless steel cup brush is not recommended for use on soft non-ferrous metals such as aluminium or brass where aggressive filaments may cause surface damage or gouging. It is also unsuitable for finishing tasks that require a smooth, scratch-free appearance; in those cases a finer abrasive or nylon brush should be used. Always verify compatibility with the specific angle grinder or rotary tool before use.

Key specifications

• Brush type: knotted wire cup
• Filament material: stainless steel
• Filament diameter: 0.35 mm
• Dimensions: 22 × 28 × 72 mm
• Pack quantity: 3 pieces

How to use

Install the cup brush on a powered angle grinder or compatible rotary tool following the tool manufacturer’s instructions and observing correct mounting direction and secure fastening. Wear appropriate personal protective equipment including eye protection, gloves and a dust mask. Start the tool at low speed to check balance and clearance, then increase to the recommended operating speed for wire brushes. Apply moderate, even pressure and move the brush across the workpiece to remove rust, paint or burrs. Avoid excessive force or side-loading that could deform the brush or increase filament loss.

What to consider before purchase

• Confirm compatibility with your angle grinder or rotary tool size and mounting system
• Assess whether stainless steel filaments are appropriate for the metal you will work on
• Consider required surface finish—knotted wire is aggressive and may leave visible scratch patterns
• Ensure you have appropriate PPE and a suitable work setup for dust and debris control

Usage recommendations

For effective and safe operation, use the brush at the manufacturer-recommended speed range, maintain even contact with the surface, and replace brushes that show significant filament loss or imbalance. Store spares in a dry place to prevent contamination or corrosion of the filaments.