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 5 in Overall Diameter 5 in Overall Thickness Not Applicable Product Type Disc Backup Pad Features See-Through