Double tube vacuum manifold with 4 x #15 o-ring joint ends. Available in 3 or 4 port configuration with Easy Action 0-10MM stopcocks. The ports can be ordered with either 14/20, 24/40 inner joints or #15 o-ring joints. Distance between ports is 100MM which will allow for flasks up to 250mL. Please see our various 0-ring joint adapters such as Ace codes 5127, 5128 and 5129.