The Terumo Pinnacle Fr.9 RSS903 is a sterile, single-use introducer sheath designed for use in peripheral vascular procedures. It features a smooth transition from guidewire to dilator and dilator to sheath, a kink-resistant design, a small outer diameter (OD) and large inner diameter (ID) to minimize the size of the access site, and a snap-on dilator lock to prevent backout during insertion.