Southern Polyurethanes Matt Black Single Stage Paint is easy to spray and will not streak. It is available in gallons only. It mixes with either a medium, slow or very slow activator at a 4:1, 6:1 or 8:1 mix ratio and can also mix as high as 2:1. A quart of activator is included in the purchase of this kit. Flatness is adjusted by activation ratio and can also be adjusted by mixing with other pre-activated SPI clears. Flattening results take 6-12 hours.