Synthetic wood filler. • Sands like wood • Stains like wood • Looks like wood A high quality wood filler that is uniform and readily workable. Fills cracks, gouges, knotholes, nail holes, and other defects in wood. Wood Repair is waterproof and may be used indoors or outdoors. Wood Repair can be used on furniture, paneling, plywood, woodwork and other applications that require a filler. Can be stained.