Generally speaking, the best spray paint for metal is hard-wearing enamel. Its oil base makes it somewhat slow to dry, but it ...
Half-used cans of spray paint are a common product to have on hand. Maybe it was for touch-ups or a craft project but either ...
While you're at it, sand all the other areas you treated for rust to smooth them out and prepare them for painting. Any spots you've sanded down to the bare metal must be primed before you paint ...