Reusable Neb Kit That Can Be Used For Up To 3 Months Without Replacement. The Timeframe Does Depend On The Frequency Of Usage. General Rule Of Thumb Is If You're Noticing That The Medication Isn't Nebulizing As Quickly Or As Much It's Time To Replace The Neb Kit Reusable Neb Kit With Nebulizer Cup Mouthpiece T And 7' Tubing Anti-spill T Design. Leak-proof And Secure Seal With Simple 1/4 Turn Assembly Design. Very Low Residual Volume (0.7cc). High Medication Bowl Capacity (10cc). Graduated Volume (cc) Markings On Bowl. Nebulizes In Upright Positions Or At Angles Up To 45. Dishwasher Safe Hcpcs: A7005-1 A7005