Attaches to a single valve port and accommodates up to 15 ampules for simultaneous freeze drying. Polypropylene base has 15 each 1/4" ID tubing ports, each with silicone tubing for attachment of ampules. For ampule neck sizes less than 10mm. Includes 15 plugs, 2 each clamps and 1 straight stainless steel adapter. Ampules not included. Adapter attaches to port on freeze dryer.