13W311 - Walter Allsteel 3-Inch Knot Wire Cup Brush 5/8-11 Thread

Precision Engineering for Surface Finishing

The Walter Allsteel 3" Knot Cup Brush (SKU: 13W311) represents a pinnacle in abrasive accessory engineering, designed specifically for industrial environments where consistency and safety are paramount. Manufactured by Walter Surface Technologies, this brush is part of the renowned ALLSTEEL line, which is celebrated for delivering exceptional value without compromising on performance. The core distinction of this product lies in its construction; each brush undergoes a strict quality control process to ensure it is perfectly balanced. In high-speed rotational applications like angle grinding, balance is critical. An unbalanced brush causes excessive vibration, which not only accelerates wear on the power tool's bearings but also leads to operator fatigue and the potential for repetitive strain injuries. With the 13W311, users experience smooth, vibration-free operation that allows for prolonged use with greater comfort and control.

The brush features a twist knot wire configuration. Unlike crimped wire brushes which are suited for lighter surface cleaning, the knot design provides a more aggressive action, making it ideal for heavy-duty applications such as removing thick scale, rust, and heavy corrosion. The wire used is of high quality, selected to resist breakage and wear, ensuring that the brush maintains its effectiveness over a longer service life. Furthermore, Walter guarantees that the wire count is identical in every unit, providing predictable performance from the first use to the last. This attention to detail ensures that the brush wears evenly, preventing the development of imbalances over time.

Designed with a standard 5/8"-11 threaded arbor, this 3-inch cup brush is compatible with a wide range of angle grinders commonly found in metalworking shops. It is specifically engineered for use on steel and other metals, guaranteeing that it will not contaminate the workpiece—a crucial factor when preparing surfaces for sensitive coating or welding applications. Whether used for maintenance, repair, or fabrication, the Walter Allsteel knot cup brush delivers reliable, professional-grade results.