Disc Interface Pad, Abrasive Mount Type Hook and Loop, Abrasive Mounting Quick Change System Not Applicable, Connector Type Hook-and-Loop, Backup Pad Shape Round, Device Material Foam, Density Soft, Maximum Operating Speed 12,000 RPM, Number of Vacuum Holes 31, Color Black, Overall Length 3/4 in, Overall Width 5 in, Overall Diameter 5 in, Overall Thickness 1/2 in, Product Type Disc Backup Pad, Features Mushroom Hook Type 3