Headplate for 2L Bio Reactors, 16 Ports. Headplate is constructed of 316L stainless steel and electropolished to a mirror finish. Supplied complete with a silicone o-ring that mates to the glass vessel. Number and size of ports as listed.CLS-1379-02 (2L): 16 Total Ports: M30 Center, 1 each G3/4, 5 each M18, 6 each M10, and 3 each M6. Like-for-like replacement parts for Applikon Biotechnology and Broadley-James brands of bioreactors.Applikon is a registered trademark of Applikon Biotechnology, Inc. Broadley-James and Broadley-James Corporation are registered trademarks of Broadley-James Corporation.