3M HOOKIT BACK UP PAD This uniquely constructed compounding/polishing pad system provides quick change advantages while producing exceptional finishes on gelcoat and paint systems. Designed for use with 3M Hookit abrasive discs, our 3M Hookit Back-up Pad is built for added support, control and speed during automotive sanding jobs from paint removal to polishing. Each center-hole pad features a flat, rigid center for support and softer, tapered edges for added control.