The Eastwood Metal Blackening System is far more durable than any room temperature blackening system on the market today. User friendly, easy to apply spray application requires no special equipment, no air compressor, or specialty solvent. Everything you need is included in the kit. The Metal Blackening system was designed for the DIY market to accurately duplicate the look and feel of black oxide phosphate finishes on automotive under hood and under car hardware , bracket, hinges, etc. Normal Oxide coating was done with heat and chemical baths that still could not prevent the corrosion over time. The Metal Blackening System eliminates all of that. Easy to apply no heat cure and your parts will look accurate and never rust again and have protection from heat up to 600 F. Professional results on all steel, stainless and alloy components. APPLICATION Eastwood Metal Blackening can be applied by multiple methods including: brushing, airbrush, detail gun or included Preval® sprayer. BRUSH ON: 1. Follow all surface prep and product mixing instruction steps outlined previously. 2. Be sure to wear protective gloves, eye protection and respiratory apparatus as described in safety instructions. 3. A good quality disposable foam brush works best for smooth, even product application. 4. Carefully dip foam brush into mixed Eastwood Metal Blackening, then spread onto surface using smooth, uninterrupted strokes. 5. This product is designed to go on in several thin coats which are much more effective than a single thicker application. To apply additional coats, wait a minimum of 5 minutes between coats. 2 coats are recommended. AIRBRUSH OR DETAIL GUN APPLICATION (PREFERRED METHOD): 1. Follow all surface prep and product mixing instruction steps outlined previously. 2. Be sure to wear protective gloves, eye protection and respiratory apparatus as described in safety instructions. 3. Use a gravity-feed detail gun or airbrush with a 0.3 to 0.5 mm needle/nozzle set and mist on the first coat of Eastwood Metal Blackening. 4. This product is designed to go on in several thin coats which are much more effective than a single thicker application. To apply additional coats, wait a minimum of 5 minutes between coats. 2 coats are recommended. 5. Do not allow the product to cure in the spray gun or permanent damage will occur. The gun must be cleaned thoroughly with Surface Prep cleaner, Eastwood Aerosol Injected Cleaner #12846Z, acetone or lacquer thinner.