#30 DARK GRAY BALLAST QUART – Economical coverage for HO. Larger aggregate for better visible texture! Our 32 oz. Shaker comes with pour applicator cap! #30 grade natural stone ballast accurately graded for the most discriminating protoscale modeler! Lightly blended hues for subtle contrast. Unlike other ballast, our Scenic Express stone is \”sealed\” so it will not darken when Matte Medium is applied.