3M Softback Sanding Sponge, 02602, 4 1/2 in x 5 1/2 in (115mm x 140mm), Superfine, 20 sponges per pack, 6 packs per case

02602 SOFTBACK SANDING SPONGE For industrial/occupational use only. Not for consumer sale or use. 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