Gold Proflex Sheet 120 Grit 50 Sheets/Pk 9" x 11" MK-23-104-120. Gold Proflex is a stearate coated abrasive paper for dry hand sanding of wood, fillers, paints and lacquers. The backing consists of a flexible, impregnated latex paper that provides desired flexibility and conformity in profile sanding operations as well as on flat surfaces. The paper has an anti-slip coating on the back side in order to provide good grip and feeling during the sanding. Gold Proflex has aluminium oxide grain, which provides a good cut and an excellent scratch pattern.