Benchmark Abrasives 4" knot wire cup brush with 5/8"-11 thread is designed for removing and cleaning scour metal, weld beads, deburring machined surfaces, removing sharp edges from sheet metal, etc. The stainless steel crimped wire cup brush is suited for medium to heavy-duty jobs. This cup brush provides flexibility for the light removal of rust & paint & general cleaning. Industrial-grade drill wire brushes are recommended for use on angle grinders sized 4” to 5“. The knotted cup brush is designed for rigorous workpieces. Efficient wire cup brushes are used in various industries like automotive, transportation, mining, shipbuilding, construction, welding, foundries, fabrication, etc. All our abrasive products are made with quality materials and exceed ANSI and EU European Standards. We trust in delivering high-quality products to the end-user. Customer satisfaction is the lifeline of our brand.