Amazon.com: FangKingNo 10pcs 1/2 Inch White 2-Way PVC Male Adapter Pipe Fittings (Socket x Male Pipe Thread) Coupling with 1/2-Inch Male Thread Schedule 40-10 Pack (0.5 Inch) : Industrial & Scientific
Halex 1-1/2 in. Rigid Conduit Coupling 64015 - The Home Depot
304 Metal Stainless Steel Pipe Fitting, Coupling, Npt 1/2 x Npt 1/2 In — gotonovo
Halex 1/2 in. Rigid Conduit Coupling 64005 - The Home Depot
1-1/2 inch Threaded Galvanized Coupling - Ewing
Merit Brass - Brass Pipe Coupling: 1/2″ Fitting, Threaded, FNPT x FNPT, Class 125 - 02208494 - MSC Industrial Supply
Amazon.com: 20Pack 1/2 Inch PVC Nipple Male Thread Coupling Adapter Connector (Male x Male) 1/2" PVC NPT Male Thread Coupling Pipe Fitting for Thread plumbing Pipe, Home or Industrial Use, Schedule 40 :