ASA - Black (Black Spool)This is the exact same ASA Filament as the full price version, it has been made slightly cheaper due to a slightly different spool. ASA (Acrylonitrile Styrene Acrylate) filament is made for prints that need to withstand harsh environments without compromising shape, colour, or structural performance. Offering excellent UV stability along with strong heat and weather resistance, ASA is a dependable choice for outdoor use and demanding functional parts.