Please use for parts or study sessions. Can also be used for educational materials. Purchasers will be prioritized over comments. *For price negotiations, please state your desired price. Please refrain from asking "How much will it go down?". If agreeable, I will create a dedicated listing immediately. Lever operation confirmed. Pulling the lever releases the lock and bends the knee. The lock engages when the knee is straightened. The second leg (Photo ➁) has a different specification. The photos show everything. I am not a manufacturer or medical professional, so I cannot answer detailed questions. I have not checked anything other than the lever, so please only purchase if you understand that this is a used item. #4649a #4649 #Prosthetic leg #23cm #Educational material #Nursing care #Medical #Smile4649