AO III external fixator (upper extremity) (lower extremity) instrument kit is composed of needle rod clamp, rod clamp, connecting rod, bone traction needle, bone drill and other components. It can be flexibly assembled according to different operations and is widely used in External fixation of extremity fractures. For example, the fixation of the ulna and radius, humerus, tibia and fibula, femur, pelvis, knee, ankle and other parts. The product has high flexibility and strong applicability. This system is equipped with precise special instruments and carbon fiber connecting rods, which is easy to operate and has a clear vision during the operation. Stable strength. In the usual clinical use, it has been well received by doctors.