SAIT Coated Flap Wheel, Premium, Series: 2A, 1-1/2 in Wheel Diameter, 1/2 in Face Width, 60 Grit, Medium Grade, Aluminum Oxide Abrasive, 20000 rpm Maximum, 1/4-20 Center Hole Thread Size, Cotton Backing, X-Weight Backing Weight, Threaded Spindle Attachment