This uniquely constructed compounding/polishing pad system provides quick change advantages while producing exceptional finishes on gelcoat and paint systems. The 3M™ Hookit™ System is designed to provide easy attachment, removal and accurate centering of the 3M™ Hookit™ Compounding or Polishing Pad to the 3M™ Hookit™ Backup Pad. Fits all standard (5/8 inch shaft) slow-speed polishers.