MettleAir 129-6 3/8" ID Hose Barb Mender/Splicer/Joiner/Union Fitting Brass Tubing Hose Adapter/Coupler (Pack of 10) Part # : 129-6 Hose ID 1 (Left) : 3/8" Hose ID 2 (Right) : 3/8" Material : Brass Type : Barb Hose Mender/Splicer