Experience 2 ways to intensify your erection with 1 genius stoker! The Suck-N-Pump Stroker features a medical-style pump ball that functions as an erection pump in one position and as a masturbation stroker in a second position – double the performance options of an ordinary pump! PENIS PUMP – With each squeeze of the medical-style pump ball in the PUMP position a super-strong vacuum is created inside the chamber, forcing your erection to quickly expand its length and girth. MASTURBATION STROKER – When the pump ball is placed in the STROKER position your shaft is surrounded by super-tight oral sex suction. Twist the top dial to activate powerful multi-speed vibrations for additional stimulation. The soft TPR sleeve forms an air-tight seal against your skin, creating incredible suction and amazing results, while the crystal-clear tube is designed for a firm grip and has a convenient ruler to gauge your expansive growth. You can instantly relieve pressure by pressing the air release