PVC Schedule 40, White, Coupling, Threaded, 1/2 in. to 2 in. Sizes
Amazon.com: FangKingNo 10pcs 1" White PVC Pipe Coupling Adapter Pipe Fittings Slip (Socket x Socket) Schedule 40 Easy to Install,and High Tensile for Home or Industrial Use (1 Pack of 10pcs) (1
Orbit 1 in. PVC-Lock Coupling 38676 - The Home Depot
Charlotte Pipe 1 in. x 3/4 in. PVC Coupling PVC 02100 3600 - The Home Depot
Charlotte Pipe 1-in Schedule 40 PVC Couplings (10-Pack) in the PVC Pipe & Fittings department at Lowes.com
Cantex 1-1/2 in. Conduit Coupling R6141627 - The Home Depot
DURA 1 in. Schedule 40 PVC Coupling Fitting C429-010 - The Home Depot