25 inch Dia x 6-3/8 inch ID Pack includes 38 Wafers Poly wafers perform best on loose debris. Wire Wafers cut through hard-packed snow, ice, mud, and dirt. Replacement Brush Kit for MB 60 inch sweepers. Fits Models MCT, SHL, and other model MB Brand sweepers. Boxed quantity of 67: (flat brushes and spacers) Sweeping Brushes used on 60 inch MB brand sweepers. The outside diameter of the wafers is 25 inches with a inner diameter of 6-3/8 inch. Convoluted wafers do not require spacers; they are installed in an alternating pattern, which provides 100% coverage without any missed “strips” in the sweeping pattern. M-B Tough Brush manufactures the longest-lasting and best-performing brushes in the industry. Our brushes are used by OEM sweeper manufacturers, the largest and busiest airports in the world, municipalities across North America, road-building and sweeping contractors, the largest farms operations in the USA, and tens-of-thousands of small-town end users with a single broom that helps them with their small business, farm, or residential property.