Glass Manifold with #15 Ace-Thred at either end to allow switching vacuum connection to left or right side. Supplied with three or five 0 - 4mm High Vacuum, Easy Action Stopcocks for sample ports. Plugs are PTFE with Nylon hooded handles and FETFE O-Rings. Ultimate vacuum of 10 - 7 can be realized with standard three O-Rings. Supplied with Ace-Safe Serrated Connector for one end to connect vacuum line. Complete consists of Glass Manifold, End Plug with FETFE O-Ring, and "Ace-Safe" Connectors with bushing for tubing connection.