Milwaukee 3-1/2″ Knot Wire Cup Brush – Carbon Steel

HIGH-SPEED DESCALING AND AGGRESSIVE SURFACE PREPARATION

Professional-grade surface preparation requires an accessory that maintains its integrity under the high centrifugal forces of an angle grinder. The Milwaukee Hyperwire™ Knot Wire Cup Brush is engineered specifically for heavy-duty cleaning of structural steel, castings, and sheet metal. By utilizing a precision-knotted construction, this brush minimizes wire fatigue—the primary cause of premature accessory failure—ensuring a longer service life and a more consistent finish. When mounted to a 4-1/2″ or 5″ grinder, the 5/8″-11 threaded spindle provides a secure, vibration-resistant connection that translates to better control and reduced operator strain during extended descaling or paint removal sessions.

• / Hyperwire™ Construction delivers significantly faster material removal while extending the overall life of the brush.
• / Precision-engineered knot design reduces wire fatigue and breakage during high-torque applications.
• / Balanced construction minimizes tool vibration, protecting the grinder’s bearings and reducing hand-arm fatigue.
• / High-tensile carbon steel wires are optimized for aggressive cleaning on tough, ferrous surfaces.
• / Universal 5/8″-11 thread ensures compatibility with all standard 4-1/2″ and 5″ small angle grinders.