Trinity Vibrating Penis Head Teaser. Tease the tip of your cock with a textured and vibrating stimulator! This masturbation toy includes a removable bullet that provides powerful vibration, as well as a head teaser that is internally lined with exciting nubs. The stretchy material allows it to fit over the head of just about any sized shaft. Jack off while you wear it or let your partner play with you! Measurements: 4.25 inches in length, 1.5 inches in diameter, unstretched. 1.5 inches insertable. Materials Thermoplastic Elastomers TPE, ABS plastic. Color Black. Note: vibrating stroker requires 3 AG3/LR41 batteries, included.