The no.15 o-ring joint connections at each end

Three or four ports with 4 mm bore glass high vacuum stopcocks and standard taper joints or #15 o-ring joint connections off each port. The distance between ports is 95 mm, which will accept 250 mL flasks or smaller. Requires all stainless steel, pinch type screw locking clamp 89060-256 (for 15 o-ring joint).