Gaining access and navigating tortuous urinary track are the primary functions of ureteral guidewires. Nitinol guidewire is designed to optimize both functions. Made of a Nitinol core wire it has a hydrophilic coating to aid in insertion and passage of instrumentation. Sterile pack for single use. Diameter (inches) 0.35/0.38, Length (cm) 50/60/70/80.