13F354 - 3-Inch Knot Wire Cup Brush for Angle Grinders, .015 Steel Wire

Aggressive Weld Cleaning and Slag Removal

For welders who need to clean up welds fast and effectively, the Walter 13F354 3-inch Knot Twisted Wire Cup Brush is an essential addition to your grinding arsenal. When you are dealing with fresh welds, heavy slag, or stubborn spatter, a standard crimped brush often just glides over the surface. This knot-twisted brush is built to dig in. The twisted wire design creates a rigid, high-impact face that aggressively removes contaminants, ensuring your base metal is perfectly prepped or your final weld is professionally cleaned.

Time is money in the welding shop, and this brush is designed to save you both. The .015" carbon steel wire is tempered for maximum durability, meaning you spend less time changing out worn brushes and more time working. The aggressive knot style is particularly effective for cleaning fillet welds, removing scale from structural steel, and stripping paint or rust from metal prior to welding. Its 3-inch diameter is the perfect size for maneuvering into tighter spaces while still covering enough surface area to be efficient on larger plates.

Comfort is often overlooked in abrasive tools, but Walter has engineered this brush to be perfectly balanced. If you have ever used a cheap wire cup that wobbles and shakes your grinder, you know how tiring it can be. The 13F354 spins true, providing a smooth operation that lets you maintain control and precision without fighting the tool. This reduced vibration also helps protect your grinder's spindle and bearings from unnecessary wear.

Installation is seamless with the integrated 5/8"-11 threaded nut, allowing you to spin it directly onto most standard 4.5-inch and 5-inch angle grinders. Whether you are working on a pipeline, repairing heavy machinery, or fabricating custom steel parts, this heavy-duty cup brush provides the bite you need to strip surfaces down to bare metal quickly. Trust Walter's industrial-grade construction to withstand the heat and abuse of daily welding applications.