Switch between 1" and 1-1/8" ballast hose with this reducing/enlarging hose barb union coupler.
Often times it's beneficial to connect a new hose to an existing hose of a different size, which is where the Hose Barb Reducing Union is convenient.
Share a common thru-hull with two different sizes of hose by reducing or enlarging them to a common size to reduce the number of holes drilled in the boat.
Or, use uniform fittings on the exterior of the boat regardless of what size hose you're connecting on the inside.
Please make your selections.