This nebulizer set is easy-to-use, hand-held and disposable. Also, it's compatible with all portable and home use compressors, offering fast nebulization times with greater particle density. The nebulizer cup is threaded to prevent leakage and it has a 6 ml capacity. This is a disposable nebulizer set that should be replaced roughly every 2 weeks. Must be hand-washed only. Available as an individual unit, case of 10, or case of 50.