AdaptersConnecting Inlet Flow control Vacuum Filtration Vacuum Transfer Flushing Vacuum/ Inert Gas Bubbler Distillation Vacuum Claisen Direct Drip Inlet or Thermometer Select options Inlet Or Thermometer Holed Rubber Top $0.10 Select options Inlet Or Thermometer Viton O-ring $0.10 Select options Inlet Or Thermometer With standard taper 10/30 top outer join $0.10 Select options Inlet Or Thermometer Hose Connection $0.10