Replacement dust head sleeves for Utility Microfiber Duster NSN 7920-01-586-8010. Made with recyclable polypropylene microfiber. Dust head sleeve is 3-1/2" W x 17" L. High-quality, reusable microfiber is a sustainable choice for keeping your dusting tools in peak condition. The precisely-cut dust head sleeve measures 3-1/2" W x 17" L for a snug fit.