Nyalox 3 x 5/8 in. Gray 80-Grit Nylon Course Cup Brush features abrasive grain embedded in every bristle, allowing it to work like a power sander to remove old finishes from wood, metal, tile, and more. This brush is color-coded with gray representing 80 grit, so you can select the safest grit for your surfaces. It spins directly onto your angle grinder with a 5/8-11 female thread and operates at a maximum speed of 12,500 rpm. Designed to maintain its shape without shedding bristles, this brush does not rust and is safer to use than traditional wire brushes. It is also i for dried grout removal, making it a versatile tool for various surface preparation tasks. Model Number: