Walter 5-Inch Stainless Steel Knot Cup Brush with Safety Ring

Aggressive Cleaning for Stainless Weldments

For professional welders working with stainless steel, surface contamination is the enemy. The Walter 5-inch Stainless Steel Knot Cup Brush is your heavy-duty solution for pre-weld preparation and post-weld cleaning. Unlike carbon steel brushes that leave behind iron deposits—leading to "after-rust" on your stainless projects—this brush is built with high-quality 304 stainless steel wire. It aggressively removes heavy slag, weld discoloration, and spatter without compromising the corrosion resistance of your base material. It is the ideal tool for cleaning large flat surfaces, structural stainless beams, and tank walls.

What sets this brush apart in the shop is its durability and control. It features a unique safety supporting ring that holds the twisted knots tight. This prevents the brush from splaying out too quickly, giving you a more concentrated and aggressive scrubbing action right where you need it. When the wires eventually wear down to the ring, you simply knock the ring off to reveal more wire, getting a second life out of the same tool. This means fewer trips to the tool crib and more time under the hood.

Vibration can be a major issue when grinding all day, leading to numb hands and fatigue. Walter brushes are known for their superior balance. You'll feel the difference the moment you spin it up; it runs smooth and true on your grinder. The 5/8"-11 threaded hub spins directly onto your 5-inch, 6-inch, or larger angle grinder, locking on tight for safety. Whether you are deburring a cut edge, stripping scale, or cleaning up a multi-pass weld, this knot cup brush delivers the bite and longevity professional fabricators demand.