American Olean Windmere 1 x 6 Matte Glaze Ceramic Quarter Round The American Olean Windmere 1 x 6 Matte Glaze Ceramic Quarter Round delivers a sleek and smooth finish to your tile edges. Its durable ceramic construction and matte glaze surface make it ideal for protecting and beautifying walls and countertops. Pair it with other Windmere tiles for a unified and stylish design.