1. Made of 100% imported medical grade silicone.
2. X-ray opaque line through the whole tube.
3. Clear depth marks on the tube.
4. There are three-four stainless steel balls are seals in the tip end.
5. It is easier to indwell the tube at a certain position.
6. Package: Blister bag, with a inner nylon bag.
7. Sterile by EO gas.