Arguably the most important part of any penis pump is the cylinder or vacuum chamber. Inside each of these chambers is where the vacuum suction helps create and enlarge your penis. Our flame-polished acrylic pump cylinders are incredibly comfortable to pump with and are made to withstand even your highest pressure. At the top of each pump tube is a female quick disconnect fitting adapter that allows you to connect any compatible hand pump. Our pump cylinders are designed to withstand rough use and last you for many years. As the tube ages, you can easily remove the fitting and replace it with a new one to keep it operating as new. Each cylinder features a measuring gauge that allows you to monitor your growth as it happens. Easily connect this cylinder to any of our premium hand pumps and elevate your sex life.