3M Softback Sanding Sponge, 4 1/2 in x 5 1/2 in, Ultrafine. Ultrafine ranges from grade 800 to 1000. Flexible foam pad enables user to sand hard-to-reach areas such as headlight openings, around door handles, door jambs, etc. Helps to eliminate finger marks and can be used wet or dry. Abrasive Mineral Type Aluminum Oxide. Product Form Scuff Pad / Abrasive Sponge. 20 sponges per box. 02601