3M 907NA Small Area Sanding Sponge, 3.75 in by 2.625 in by 1 in, Extra Fine/Fine Go to amazon.com Related posts Top 12 best sandpaper sponge fine Top 16 recommendation sand paper blocks for 2022 FeatureSoft foam sponge with sanding abrasive coating on three sides of block foamThe product is easy to installThe product is highly durable DescriptionSoft foam sponge with sanding abrasive coating on three sides of Block foam. Woodworking product designed for contour and Flat sanding.