3 Pro-Craft Emery Polishing Compound For Buffing & Removing Scratches. This is a new set of 3 tubes of Pro-Craft emery polishing compound. Great for use on iron, steel and hard metals for coarse buffing and removing scratches, rust, corrosion, burs, etc. Eliminates the mess and does away with broken bars. The peel back cardboard tube exposes only the amount needed. Not for gold, silver or plated articles. Each tube contains 5 oz (155.5 grams).