These Jabsco Ports Kits 30651-1000 allow Jabsco Par-Max 2.9, Par-Max 3, Par-Max 4, Par-Max 5 and Jabsco Acumilator Tanks to adapt to different sizes of hoses and plumbing. This Jabsco Port has a right angled bend, 13mm hosetail and a simple snap on design. Supplied in pairs. Specifications Elbow ports: 90 degree ID hose: 1/” (13 mm) Kit Includes EPDM ‘O’ Ring 2 x Ports per pack Port Kit