BRM BMC-20AY, ABRASIVE MANDREL MOUNTED-STANDARD, 320 Aluminum Oxide, 2″ Diameter, 1/2″ Trim Length, Maximum Safe Free Speed (RPM): 25,000Brushes have an integral 1/4″ shank which makes them ideal for use in automated and CNC equipment. Please consult the abrasive filament chart for other grits and abrasive types.








