This revolutionary patent design allows you to customize your pleasure with an extendable tube that locks in place at the exact length you desire. The Extender Pro Vibrating Pump has progressive IST technology with incredible realistic intermittent suction to provide lifelike "milking" sensations for the best blow job of your life! Simply press the buttons on the rechargeable motor for 3 suction modes and 5 patterns of teasing vibrations that travel all the way up your penis. The crystal-clear tube is designed for a firm grip and allows you to view the action. The stretchy TPR pleasure donut helps create a tight seal, while the supple internal pleasure nubs gently stroke your shaft.