All port assemblies are manufactured from 316l stainless steel and have an electropolish finish. 2- port assemblies have siphon and vent tubes. 3-port assemblies have siphon, fill tube and vent tubes. All port assemblies include a 45mm blue polypropylene screw cap and white silicone gasket. Size: 8l Longest tube length: 10 7/8" 45mm cap