Safety slips are auxiliary protective tools in oil drilling operations, primarily used to grip the drill string and prevent it from falling into the well when drill pipe slips fail or extra fixation is needed. They are usually composed of multiple slip bodies, connecting rods, handles, and spring mechanisms, driven manually or hydraulically to form a clamp around the drill string. Safety slips have deep teeth and strong gripping force, suitable for emergency safety protection, serving as a "double insurance" in drilling operations.