The Tönnis Nerve Retractor 15cm is a surgical instrument commonly used in neurosurgery. It is designed to retract or hold back soft tissue during surgical procedures, allowing for better visualization and access to the surgical site. The 15cm length of the retractor makes it an ideal tool for deep surgical procedures and provides the surgeon with a greater range of motion. The Tönnis Nerve Retractor is named after German neurosurgeon Hermann Tönnis and is an essential tool for any neurosurgery procedure.