With this pump you will obtain that your penis grows in size and volume, besides serving like masturbator. When pumping you secure it to major sensitivity in the member, producing you an orgasm and unique ejaculation. A beautiful solution when you want to mainly pump your penis head and not so much the shaft. The expansion of the shaft of the penis is limited by the smaller inner diameter of the neck of the cylinder. The head on contrary, has much more space for expansion.