Jet nebulizer set come with mouthpiece as the interface of inhalation and 6" corrugate tube as the reservoir to minimize the temporarily store the nebulization prior to inhalation. Optimal particle size delivered at better nebulization rates. Easy-seal cap and spill proof jar to prevent leakage. Available with standard or universal tubing connector. Standard Particle size:0.5-1.0 micron. Optimal particle size delivered at efficient nebulization rates. Easy-seal, threaded cap and volume capacity anti-spill jar to prevent leakage. Available with standard or universal tubing connector.