Single tube vacuum manifold with #15 o-ring connections on ends. Available in either 3 or 4 port configuration with 0-10 Easy Action stopcocks. Order with either 14/20, 24/40 inner joints or #15 o-ring joints on ports. Distance between ports is 95mm which allows for use of flasks up to 3 Liters. Please see our various o-ring joint adapters such as Ace codes 5127, 5128 and 5129.