The 9 1/2 Hohmann Retractor with a 25mm blade is a large surgical instrument used in orthopedic procedures. It features a 25mm wide blade designed to retract bone and soft tissues during surgeries that require extensive exposure. The 9 1/2-inch frame provides optimal leverage and control, making it suitable for larger surgical sites or deep procedures, such as joint replacements, spinal surgeries, or fracture repairs.