U.S. Solid Brass Hose Barb Reducer Barb Fitting Kits with 6 Clamps Pack of 3 - U.S. Solid
Amazon.com: Quickun Brass Hose Barb Reducer 1/2" to 1/4" Barbed Reducer Fitting Reducing Splicer Mender Union Adapter for Air Water Fuel : Industrial & Scientific
Amazon.com: Brass Hose Barb Reducer, 3/8" to 5/16" Barb Hose ID, Reducing Barb Brabed Fittings Splicer Mender Union Air Gas Water Fuel Line Heater Garden Pond Poly Tubing Adapter (Pack of 2) :