Port Cap with 3 ports (1/4-28) , PTFE insert, and blue Polypropylene collar. Fits glass bottles with a GL45 neck size. Comes with plugs. Includes the following parts: WF-GL45-3. BOTTLE CAP, GL45 3-ported 1/4-28, PTFE insert, blue Polypropylene collar. WF-1428-PLUG-EA. (3) PLUGS, 1/4-28, natural Teflon® PFA. Choose adapters based on your tubing