Ace Vacuum Manifold System, model Z286079 is manufactured by Ace Glass. This product is used for easy assembly of vacuum system, including the following components: • 1 Vacuum manifold, dual bank, 3-ports with 5-ring medium hose barb connections, and greaseless, 0 to 4 mm, double action, high-vacuum PTFE stopcocks. • 1 Mineral oil bubbler, adjustable. • 1 Vacuum trap, adjustable. • 4 UHDPE tubing connectors for ½ in. I.D. vacuum tubing. • 2 Nylon plugs.