OH48A008X028 Oak Harbour - Dusk Stair Tread Set (13) Stair Tread 100% Wool - Stair Tread. Be basic. Be practical. Be fashionable. Be it all with the rich look and feel of these 100% wool stair treads; a classic in updated color-ways. Wool: Wool yarns create a texturized heathered look with unmatched quality durability and timeless style. Reversible: This rug is crafted to last and last. Reversibility adds longevity with twice the wear and tear.