The Smiths Medical 100/790/080 is a replacement inner tracheostomy cannula. This product is designed for use with a size 6mm Portex tracheostomy tube. It is a disposable item, ensuring that you always have a fresh, clean cannula when needed. This product is non-sterile and comes in a convenient pack of 10, making it an ideal choice for healthcare facilities. Please note that this product is intended for single-use only to prevent cross-contamination.