The DuoSphere is a devious combination of a double beaded, sliding anal plug and a curved bondage hook. One by one you can pop the cool steel balls in. Once you slide the plug home, you are now free to adjust its position along the length of the bondage hook to suit your needs. Each end of the curved steel bar features a pivoting O-ring that allows you to attach ropes, chains, or whatever creative bondage equipment you have in mind. The top bead of the anal plug is removable, so you can choose whether your sub will experience both of the steel spheres or just one. Warm or cool the DuoSphere in water prior to insertion for some exciting temperature play. Measurements: Bondage Hook is 8.25 inches long, Anal Plug has 4.13 inch insertable length, 1.62 inch max insertable diameter.