RustePrufe Liquid powder solvent and metal protecter comes in a 2 oz bottle, applies as a liquid, and becomes a gel-like protective coating when allowed to set. We use it at E. Arthur Brown Company for a final coating on all of our custom guns, barrels, and shop jobs. Excellent for protecting firearms and other steel items. This is a 2 oz. bottle of liquid RustePrufe. We also offer a RustePrufe impregnated Chamois-Cloth Kit you might prefer. The RustePrufe manufacturer also promotes it as a nitro powder solvent. See our Gun Cleaning and Maintenance Products on our Accessories Menu.