No matter what you need, the Ball Stretcher Multi-Ring System has you covered. Each ring is flexible and pliable, and able to be used solo or together. They delay ejaculation, prolong erections, and enhance size and thickness. And if you’re just too big for your partner? Stack them all to create a buffer, so you never get in too deep. Width/Diameter: 2 in. (5.1cm), Unstretched Inner Diameter: 0.8 in. (20mm), Depth: 2.5 in. (64mm).