Check the listing for details. 3M 02602 Softback Sanding Sponge Superfine Grade (20 Sponges). Color: Gray, Condition: New. Listed at 78.90 USD. 3M Softback Sanding Sponge sands hard-to-reach areas on cars, trucks and vans such as around headlight openings, door handles, door jambs and other locations. The soft, flexible foam backing conforms to virtually any profile or shape on a vehicle. Our sponges are coated with long-lasting aluminum oxide abrasive. When you need to sand a location that is challenging to reach, or need to uniformly sand a unique profile, choose a 3M Softback Sanding Sponge for its ability to conform to most any shape or reach difficult spots. The soft foam backing is more flexible than conventional paper backed sandpaper. To access tight locations, the foam backing has been made relatively thin as compared to many other sanding sponges. Use these sponges for hand-sanding applications where you need more precision and detail than could be achieved with machine-sanding methods. Features: Flexible foam backing adapts to unique contours and access hard-to-reach areas Aluminum oxide abrasive offers a long life and fast cut Waterproof bonding system allows for either wet or dry sanding applications Sponges are made for hand sanding Versatile sanding sponges work on many surface materials