Check the listing for details. Klein Tools 60443 Reusable Face Mask Filter Replacement, 3-Pack. Condition: New. Listed at 12.99 USD. Klein Tools 60443 Reusable Face Mask Filter Replacement, 3-PackKlein Tools Reusable Face Masks use these replaceable filters to offer basic protection against non-toxic dust, pollen, mold, dander, and common airborne irritants. Washable mask features nose clip for fit and glasses fogging prevention; comfortable hook-and-loop neck strap and secondary head strap for optimum fit. Exhalation valves for cool mask environment. Easily replaceable filters.Replacement Filters (Cat. No. 60443) for Klein Tools Reusable Face Mask (Cat. No. 60442) offer basic protection against non-toxic dust, pollen, mold, dander, and common airborne irritantsThese filters are designed to fit the Klein Tools Reusable Face Mask only, and only when these items are used together is the device usable for suitable applicationsFilters are easily replaceable; twist the two valve backings to remove filter and replaceMade of 5 layers of non-woven polypropylene with a folding activated carbon layerNOT NIOSH-approved; Not for silica, asbestos, mold, or non-organic chemicals. NOT a medical deviceSold as a 3-Pack