Single tube vacuum manifold with #15 o-ring joint ends. Available with 3 or 4 high vacuum stopcock ports. Order with inner joint port ends (14/20 or 24/40) or #15 o-ring joints. The distance between ports is 95mm, ideal for flasks up to 250mL. Please see our various o-ring joint adapters such as Ace codes 5127, 5128 and 5129.