The Silicone Ball Gag features nipple clamps attached with a high-quality chain. The gag has a Pu leather strap that adjusts from 16 to 22.5 inches and has a high quality metal buckle that can be locked. A lock with 2 keys is included. The ball for the gag is made from high-quality silicone that is body safe, pliable and yet extremely durable. The ball has a diameter of 1.65 inches. Attached to the gag are two high-quality chains with fully adjustable nipple clamps attached. The pressure on the clamps is easily adjusted with thumbscrews, allowing you to adjust pressure on the fly.