Resistant has advantage of the pull back handle is easy stent release and comfort exact positioning. The catheter shaft is high flexible optimal for cross over technique. It has high flex stent design from 4 to 8mm, higher radial force from 9 to 12mm and the stent length is up to 200mm. The Stent has three Tantalum markers per stent end. It has excellent optimal kinking performance, pushability and trackability.