Internal fiberglass ferrules are either solid (IFS) or thick hollow tubes (IFH) and are inserted inside the ends of two tubes to connect them together. Internal ferrules make a smoother connection that does not have the bulk of an external ferrule. They fit those hard to fit tubes where nothing else is available.

In the "Options" area below, select the size ferrule you want. You may then enter a quantity. OD=Outer Diameter