Discovery is revolutionary for beginners in butt play! Discovery is the first Butt Plug Dilator especially made to accompany you in your first anal dilation. Discovery works in two steps. The first step is smooth insertion using the tapered, 1.7 inches length tip that goes from 0.5 (pinky finger sized) to 1 inch in diameter. When you feel ready, the second step is anal dilation by adjusting the shaft at your own pace. By turning the black key, the girth of the shaft increases gradually, slowly, and safely, from 1 inch in diameter to 1.35 inches (averaged sized phallus).With Discovery, you're in control of your anal dilation. Get ready for a whole new adventure!