The PRHI Solid Arm is a bionic arm add-on kit for your 12" vintage style GI Joe action figures. It is designed to fit original style GI Joe bodies, including vintage, reissue, and Cotswold Elite Brigade bodies. It will not fit muscle bodies. This new listing is for a complete arm kit on one sprue, a left arm with a gripping hand. Additional hands and wrist joints can be purchased separately.