Spectrum Noir Stump Sander And Eight Sanding Sheets. Refresh and clean used paper stumps using this sanding block. Rub the point of your paper stump across the Spectrum Noir sanding block to refresh, clean and create the perfect point for your blending needs. This package contains one 6-3/4×1-1/4 inch stump sander and eight 4×1 inch sanding sheets. Imported.