Weiler 2" Narrow Face Stem-Mounted Crimped Wire Wheel provides a flexible brushing action for cleaning and deburring applications on Steel; Armored Steel; Cast Iron; Ductile Iron and Tool Steel. The permanently-attached 1/4 in stem are intended for use on CNC,/Milling/Automatic Machines, Die Grinders, Drills, Drill Presses, Right Angle Die Grinders and Straight Grinders. Although they can also be mounted onto a drill, the speed and power of that tool will decrease the effectiveness of the brush. Featuring Weiler's solid ring construction, these radial wheels are available in heat-treated steel, type 302 stainless steel and brass wire.