4-Inch Knot Twisted Saucer Cup Brush for Stainless Steel

Rip Through Slag and Scale in Tight Corners

Every welder knows the frustration of trying to clean a fillet weld or a tight corner with a standard cup brush—the rim hits the wall before the wire hits the weld. The Walter 13H404 Saucer Cup Brush solves this problem with its unique 45-degree shape. It’s built to get into those hard-to-reach areas where flat brushes fail. Whether you are prepping a joint for a pass or cleaning up after the final weld, this brush gives you the angle you need to strip away slag, spatter, and oxidation without having to contort your grinder or change tools constantly.

This isn't your average hardware store brush. It features heavy-duty knot twisted wire, which means it bites hard. It’s designed for aggressive brushing action that strips contaminants fast, saving you time on the grind. Because it is specifically made for stainless steel, you can use it with confidence on your stainless fabrication projects without worrying about embedding carbon steel particles that will rust later. It’s the professional choice for maintaining the corrosion resistance of your base material.

Balance is key when you're grinding all day. A wobbling brush numbs your hands and fights you every inch of the way. Walter brushes are known for their "Perfect Balance," giving you smooth action that lets you control the tool rather than the tool controlling you. With a standard 5/8-inch arbor, it fits right onto your 4-inch or 5-inch angle grinder. If you need a tool that combines the aggression of a wheel with the coverage of a cup, and can handle the demands of stainless steel fabrication, this saucer cup brush is an essential addition to your tool crib.