Osborn 0003213700 ATB Cup Brush with Round Trim.  Designed with a round trim and densely packed filaments, this brush is ideal for irregular surfaces.  Nylon filaments filled with silicon Carbide abrasive for increased brush life and superior effectiveness.  

• 4" Diameter
• 80 Grit
• Silicon Carbide-filled Nylon filaments
• Straight 5/8-11 Arbor Hole
• 1-1/2" Trim Length
• 6,000 Max RPM 
• Priced and sold as each (1)