Erec-Tech (Pos-T-Vac) Mach 1 Tension System - Replacement Tension Rings

 Information from the Manufacturer/Distributor Uromatrix (formerly Stamen Medical):

• The Mach 1 Tension Systems are superior in quality and are designed for your ultimate comfort.
  
• The most important component of a vacuum therapy device is the tension system.
  
• Unlike other tension systems and rings, the Mach 1 Tension System is easy to load, fits comfortably, is effortless to remove after intimacy and will provide a full and satisfying erection.
  
• Available in several sizes to provide you with a perfect fit.
• This listing is for one single ring. You just need to select which size/tension you need.