Arched Back Forced Posture KitWrench her head back and keep her back arched with this unique anal harness kit. Use the rope to connect the high quality leather cuff to the loop inserted into their anus. The heavy ball hooks in and holds secure, with a heavy steel material and solid construction. The 10 feet of rope allows you to bind them as loosely or as tightly as you choose. Designed so that no matter how much they wiggle, they cannot escape. Measurements: Ring has 2. 06 inch