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ID (mm): 6.0 mm.
Inner Cannula for use with 7.0 mm Tubes (SMD-505070 and SMD-504070).
The Portex flexible disposable inner cannula tracheostomy tubes are constructed of siliconized polyvinyl chloride, providing a softer and more pliable tube to reduce risk of tracheal trauma.
Built-in 15 mm ISO termination for easy ventilator circuit attachment with or without inner cannula in place.