The tension rings are the most important component of an Erectile Dysfunction vacuum pump system. Erec-Tech Mach 1 Tension Systems are durable tension rings designed to be used with the Erec-Tech vacuum penis pump. These superior quality tension rings were designed for your ultimate comfort. The Erec-Tech Tension System is easy to load and fits comfortably. 

Made with a soft gel, they are flexible and stretch over the cylinder before using the Erec-Tech vacuum pump and are applied to the base of the penis for a full and satisfying erection. Easily removed after intimacy. Can be used with the Erec-Tech Post-T-Vac Easy Loader. Available in four sizes. Sold individually.