CONLEY 6" x 3" Fiber Reinforced Concentric Reducer Flange Coupling, EP40, #117C4-E63.  Corrosion-resistant, fiberglass reinforced polymer construction.  Made in USA!

Small end:  ID = 3", OD = 7.5", 4-hole (3/4")

Large end:  ID = 5", OD = 11". 8-hole (3/4")

Length (face to face) is 9"

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