Description

A collection of same size tube connectors varying from 4mm up to 12mm. (This corresponds to the inside diameter of the hoses you are trying to connect).

I used PETG and it should provide better resistance but PLA should also work. 

 

Available models:

    Connector 4mm
    Connector 5mm
    Connector 6mm
    Connector 7mm
    Connector 8mm
    Connector 9mm
    Connector 10mm
    Connector 11mm
    Connector 12mm


https://makerworld.com/en/models/1363102-tube-barbed-connector-metric-4-12mm?from=search#profileId-1408258