Softback Sanding Sponge

3M(TM) Softback Sanding Sponge, 02604, 4 1/2 in x 5 1/2 in, Fine, 20 sponges per box 6 boxes per case Fine ranges from grade 320 to 400. 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. 3M(TM) Softback Sanding Sponges are coated with aluminum oxide mineral. Each grade uses a range of mineral sizes. Fine ranges from grade 320 to 400.