This is no ordinary stroker! The OptiMALE Vibrating Stroker Thick Ribs offers plush internal ridges for an amazing lifelike feel. The single hole creates a tight, natural suction around your cock. Increase your pleasure with the powerful 10-function vibrating bullet that will deliver incredible humming sensations. Made of UR3 this discreet masturbator warms in your hands, is easy to clean, and includes a sturdy yet sleek black box for travel and convenient storage. Proudly Made in America. From Doc Johnson. Total Length: 5 inches. Insertable length: 4.8 inches. Width: 2.3 inches.