The MRI Tuloc Localization System is used for the preoperative marking of suspicious tissue under MRI control. Its increased pressure stability and the sharp beveling of the cannula and wire tips provide for easy and safe penetration of solid tissue. The marker can be pulled back into the cannula to reposition if needed. The wire and cannula are MRI compatible, and the monofilament allows good form and pressure stability. There is optimal visibility in the MRI and good palpability during the operation. The localization system allows for smooth handling and control.