Krud kutter, 32 oz, rustex rust converter, inhibiting coating which converts rusted metal overnight into a rust retarding, paintable surface, when applied to rusted surfaces, iron oxide rust is chemically changed to iron phosphate, an inert, hard substance that turns the metal black, increases the paint adhesion & durability of the coating.

• Stops Rust & Prepares Rusted Metal for Painting
• When applied to rusted surfaces, iron oxide (rust) is chemically changed to Iron Phosphate.
• Easy to use. Can be applied by brush, roller, mop or low pressure sprayer
• Compatible with any paint system
• Biodegradable