Fiber Disc Backup Pad, Abrasive Mount Type Quick Change, Abrasive Mounting Quick Change System TN, Connector Size 5/8 In.-11, Connector Type Threaded Hole, Backup Pad Shape Triangle, Device Material Plastic, Density Hard, Maximum Operating Speed 13,000 RPM, Number of Vacuum Holes Non-Vacuum, Color Black, Overall Length Not Applicable, Overall Width 4 1/2 in, Overall Diameter 4 1/2 in, Overall Thickness Not Applicable, Product Type Disc Backup Pad, Features See-Through