A surgical tool for raising the periosteum from bone surfaces during neurosurgical and orthopedic procedures, the Adson Elevator #1 Straight Chisel 5/16" has a straight, chisel-edged blade that is 5/16 inches (about 8 mm) wide, allowing for precise tissue manipulation. Measuring 6.5 inches (16.5 cm) in total length, this elevator provides ideal control in delicate surgical settings.