Eastwood uses innovative features to allow professional results out of an aerosol.. The unique 2 chamber spray can provides the perfect ratio with no mixing, every time. The advanced nozzle and valve achieve a paint gun like wide fan pattern for better coverage. The paint formula with silicone alkyds, available nowhere else, creates a tough, long-lasting finish that will look great for years to come. Use urethane primer gray under all other 2K Aerospray\'s after proper prep for a better quality finish. These high temp paints are the highest rated in the industry and withstand up to 650°. NOT FOR USE ON EXHAUST MANIFOLDS OR HEADERS.