5X 100 grit small area sanding sponge, medium 4-1/2" x 2-11/16" x 1".. Durable, abrasive-coated foam. High-Performance, P-graded, open-coat. Flexible & comfortable to shapes & contours. washable. Lasts up to 5x longer than sandpaper with resistance to tearing. Cuts faster, lasts longer & resists clogging. Makes sanding easier of various surfaces & hard-to-reach area. Extended life; rinse and reuse.