(High Strength) Due to the daen shape, it always accepts the force by the double lines on both ends of the ring, so it is stronger than a round ring that is easy to load on one line of the ring seams. [Not easy to deformation] The spring performance of Hercules material has excellent fatigue strength and resistance to wear, and the ring gap can be opened even when the large hook is attached. Prevents rings from coming back and pinching lines. Action Hooking: The body and hook are separated to reduce action errors and improve hooking.