The 3M Scotch-Brite Tub & Tile Scrubber Refill is a pack of three synthetic bristle scrubber heads suitable for scrubbing tubs and tiles. Each scrubber head measures 6 inches in length and 4 inches in width. The product is designed to be used as a refill for the 3M Scotch-Brite Tub & Tile Scrubber.