The 3M™ Perfect-it™ ll Wool Compounding Pad refines sand scratches and other paint surface defects. This single-sided, 5-1/4-inch wool pad is designed for use with 3M™ Finesse-it™ polishes. It attaches to a rotary buffer with the 3M™ Hookit™ attachment system for fast, easy changeover and reattachment.