●Smooth outer wall
Tubing outer wall polished to be smooth, allowing good propelling and thoroughness
●Smooth transition of three-segment design
Distal end: soft and mild, with excellent radiopacity;
Remote end: Optimize softness of the head, ensuring gentleness of operation and coaxality of blood vessel;
Proximal end: Nylon polymer material provides strong support
Body: Hard but submissive, ensuring an exact torsion transmission
●Wide inner lumen
With wide inner lumen, it's easier for guidewire, balloon, stent, etc. to pass through.
●PTFE coating 
PTFE coating over inner layer to reduce frictional resistance, providing a smooth delivery for device