Wide usage: the twisted wire wheel cup brush is suitable for metal, wood and other materials that require a lot of processing, which can remove small amount of splash and slag on flux-cored welds, and well remove some oxide scales on hot-rolled steel 4 inch semi flat twist knot wire brush wheel 3 inch twisted knotted wire cup brush 4 inch semi flat style crimped wire brush wheel Specifications: Material: quality carbon steel, stainless steel Main color: red 5/8-Inch-11 Threaded Arbor Size: 75mm/3inch, 95mm/4inch, 100mm/4inch Package includes: 3 x Wire wheel brushes Notes: Manual measurement, please allow slight errors on size. Features: 3-inch and 4-inch steel wire grinding flat brush with nut has a speed of up to 12,500 rpm, suitable for angle grinders with 5/8 inch-11 threaded shank, and the running speed of twisted wire cup brush is high; It can easily and smoothly remove severe corrosion, rust, paint, splash and oxide scale, while cleaning the edge of the weld to remove burrs. Advantage: Innovative spiral knotted wire construction for a narrow face, prevent wire breakage for long time use. The weight ratio is passed precise calculations, so as to provide good balance and stability Cleaning Function: this wire brush can easily and smoothly remove heavy corrosion, rust, paint, spatter and scale. Quality carbon steel wire