Gilmour 5/8 in. Brass Threaded Male Hose End Caps - Ace Hardware
Amazon.com: Milton S-642 3/8" ID Hose Mender Fitting - Pack of 2 : Milton: Everything Else
3/8 Hose ID Barb 3/8 NPT Male Straight Hose End Brass Fitting Air Water Oil Gas | eBay
FasParts 3/8" Hose ID / Hose Barb to 1/2" Male NPT MIP MPT 90 Degree L Right Angle Elbow Brass Fitting Fuel / Air / Water / Boat / Gas / Oil WOG 250*F 1000 - Amazon.com