Boasting the same unusual three-ball design as the Nexus 'O', the O Max is bigger, bolder and guaranteed to blow you away. Not for the faint hearted, the Nexus O Max was created for those who desire a little extra fulfillment but with all the delicious tricks and treats of the innovative silicone three-ball design. The O Max works to stimulate the prostate at the same time as the perineum. It also stimulates the sensitive nerve endings located at the entrance of the anus; three delights for the price of one! Made from phthalate-free, super soft silicone for added comfort and flexibility. For advanced male use only.Ring Diameter: 3.0cmBall Diameter: 4.6cmHeight: 12.5cmMaterial: Medical grade siliconeFeatures: Three stimulation ballsSuper flexibleNon-vibratingLubricant: Water-based