Rockler 2-1/2" Plastic Coupling, Brass, HOSE PIPE FITTING, Elbow Connector, 2.5 inches
Allows you to connect two 2-1/2" fittings together without the need for additional hose or hose clamps. Example: connect an elbow fitting to a Y-fitting. Plastic. 2-1/2" Coupling has 2-1/2" ID on each to accept 2-1/2" OD fittings.