You choose who has the power: her, him or both? With this universal base you can put any dildo of any size.Beginner? Experienced? Thanks to its strong rings you can choose what you want the most. Characteristics: Universal base.Highly adjustableUniversal harness base compatible with any dildo of any size.Includes 3 metal rings of different sizes (4'7 cm, 5'6 cm and 6 cm).