This Viper Power Stroker Masturbator really is the ultimate in male masturbation from California Exotics. With five rows of stimulating stroker beads, the Maximus Viper Power Stroker Masturbator will stimulate the shaft of the penis. The body frienldy super soft inner sleeve features rows of soft nodules to create intense and satisfying pleasure every time. The easy grip hand controller quickly adjusts the speed settings via the slide button to create the perfect speed and motion. The controller is quickly pluged into the Power Stroker via the jack pin connector for instant relief whilst enjoying the powerful stroking action. The removable lid keeps the internal sleeve clean and protected when not in use. Internal dimensions are 4.5 inches x 2 inches.