The Adult Inline MDI Adapter by Instrumentation Industries can accept the new generation of MDI Canisters with a Dose Counter or Standard MDI Canisters. These MDI Adapters can be reused by a single patient to deliver medications through a breathing circuit. 22mm I.D. inlet x 15mm I.D./22mm O.D. outlet. Made of polystyrene butadiene, and includes a thermoplastic rubber cap. Package of 50.