Ingco 100mm 4 Inch Heavy-Duty Wire Cup Brush - M14 x 2 Twisted Steel Wire Knot Grinder Attachment for Rust, Paint, and Weld Scale Removal (WB21001)

Attempting to strip stubborn industrial rust, thick baked-on paint coatings, or heavy slag weld seams from structural steel using soft abrasive pads or manual wire brushes is incredibly tedious and exhausting. Standard sanding discs clog almost instantly, while manual scrubbing fails to bite into pitted metal surfaces effectively. The Ingco WB21001 100mm (4 Inch) Heavy-Duty Wire Cup Brush is engineered to deliver aggressive high-impact scrubbing power, clearing away stubborn surface contaminants in a fraction of the time. Measuring a broad 100mm in diameter, this industrial-grade angle grinder attachment provides expansive surface coverage, speeding up your metal preparation and restoration layouts significantly.

The intense stripping capability of this cup brush stems from its premium 0.5mm high-tensile carbon steel twisted wire bristles. Unlike loose crimped wires that bend easily, these heavily knotted steel wires maintain rigid structure under brutal rotational friction, ensuring aggressive material removal without breaking off prematurely. With a generous 30mm wire depth, the brush flexes just enough to clean deep pits, textured weld seams, and irregular cast surfaces cleanly. Equipped with a universal M14 x 2 threaded arbor spindle integration, it spins up smoothly to a maximum speed of 8,500 RPM. It functions as an essential companion for standard 4-inch to 5-inch angle grinders used in heavy welding prep, metal fabrication, and industrial workshop maintenance!

Technical Specifications

• Brand: INGCO

• Model: WB21001

• Product Type: Heavy-Duty Twisted Knot Wire Cup Brush

• Brush Diameter Sizing: 100mm / 4 Inches Large Footprint

• Thread Mounting Spindle Matrix: M14 x 2 Standard Threaded Interface

• Wire Strand Diameter: 0.5mm Heavy-Gauge Steel

• Wire Filament Length Profile: 30mm Extended Working Depth

• Maximum Safe Speed Rating: Up to 8,500 RPM Operational Velocity

• Tool Compatibility Match: Universal fitment for medium-to-large angle grinders featuring an M14 thread spindle layout

• Primary Target Substrates: Structural steel plates, heavy cast iron, forged iron gates, thick metal pipes, and industrial machinery frames

• Primary Applications: Rapid descaling, paint stripping, aggressive rust remediation, cleaning up heavy slag weld seams, and rough metal surface preparation

• Total Package Quantity: 1 Piece Per Pack Retail Layout

• Packaging Type: Supplied securely inside an industrial double blister hanging card pack layout for absolute wire protection and safe shelf handling