Introducing a brand-new stainless steel universal replacement lid for homebrew and soda kegs. This lid is equipped with a pressure release valve and a robust 1" metal ring to release pressure from your keg. It comes equipped with a NEW Low2 Lid O-Ring, offering superior oxygen barrier properties compared to traditional silicone o-rings. What are Low2 O-Rings? The exceptional Synthetic M-Class and Cross-Linked elastomer make them the unrivaled gold standard for homebrew kegs. This cutting-edge composition brings unparalleled oxygen barrier properties, surpassing those of traditional silicone o-rings. As a result, they are the perfect choice for homebrewers seeking top-quality keg materials to ensure that their beverages stay fresher for longer! Specifications: Made out of Stainless Steel For use with Cornelius Kegs Integrated Pressure Relief Valve Comes equipped with a Low2 Keg O-Ring providing the utmost in beverage longevity! 3 3/4" x 4 3/8"