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