3M™ Finesse-it™ PSA Back-up Pad attaches to the 3M™ Hookit™ Skirt on the 3M™ Nib Removal Sander with a brushed nylon loop. 3M™ Finesse-it™ PSA Back-up Pad has a vinyl face with a nylon loop on the back to hold the 1 ¼ in (3.18 cm) PSA backed 3M™ Abrasive Discs. The small, 1¼ in (3.18 cm) diameter head size of the 3M™ Nib Removal Sander can help you see the exact point to sand, and produces a smaller area to buff out than conventional tools.3M Finesse-it Products are a line of specially engineered abrasives, compounds, polishes, and buffing pads to be used on OEM and baked refinish paints to remove defects, sand scratches, or swirl marks on a variety of painted surfaces. 3M Finesse-it products are an integral part of a 3M recommended buffing system for repairing surface defects to clear coats, lacquered wood, solid surfaces, gelcoat, powder coat, industrial paint, acrylic, and glass.