UltraStream Chronic Hemodialysis Catheter Standard Kit; Model Number 32101524 (24 cm), 32101528 (28cm), 32101532 (32 cm), and 32101536 (36 cm) and 32102540 (40 cm). The Rex Medical UltraStream Chronic Hemodialysis Catheter is a chronic hemodialysis catheter that can achieve high flow rates at low arterial pressure.