Adam and Eve Toys Adam’s Promax Pump. This precision gauge penis pump is guaranteed to make your shaft bigger! It works by creating a vacuum inside the tube that draws blood to the area and holds it there, making your penis thicker and longer than usual. The clear cylinder allows you to chart your progress and the pressure gauge measures your work. The life like silicone stroker tip gets you in the mood! Clean up is easy with Adam & Eve toy cleaner and a warm water rinse. Weight 22.00 ounces. Width 13.30 inches. Length 2.50 inches.