The Brevi-STF™ is a modified version of the Brevi-XL™. The Brevi-STF™ maintains the advantageous features of the Brevi-XL™ but alternately possesses the largest available stylet. Even with the added stiffness, this catheter maintains a round atraumatic tip. The stylet runs the entire length of the Brevi-STF™ catheter. The Brevi-STF™ is designed to provide greater durability, ease in placement, and precise directional control (1:1 torque). In addition, these catheters are radiopaque and include the Racz® Bend Marks to better highlight key navigational reference marks.