Those are adjustable long neck elbowed and straight nozzles. Come 2 as a set, They are 3mm openning and 60mm long, 3mm openning and 70mm long. Those are very easy to make good lineups and fine tunes. Pefect set for SFA. Note: You might need adding a bit air pressure to the bottles since the nozzles got long leck. Fish tank mini pumps (low pressure) works well as I found.