ALLSTEEL™ wire brushes are designed to provide exceptional value and deliver consistent and reliable surface cleaning performance on a variety of metals. Through a strict quality controlled manufacturing process, ALLSTEEL™ brushes are perfectly balanced and feature an identical wire count to ensure vibration-free brushing. Available in a variety of shapes and sizes. Walter Surface Technologies ALLSTEEL™ Wire Cup Brush, High Quality, Series: 13-W, 3 in Brush Dia, 5/8-11 Arbor Hole Size, Crimped Filament/Wire Type, 0.0118 in Filament/Wire Diameter, 12000 RPM Maximum