Amazon.com: FangKingNo10pcs 3/4" White PVC Pipe Coupling Adapter Pipe Fittings (Slip to Slip) Schedule 40 Easy to Install,and High Tensile for Home or Industrial Use (1 Pack of 10pcs) (0.75 Inch) :
NDS PVC S&D Increaser/Reducer Coupling, 3 in. Hub X 4 in. Hub 4P07 - The Home Depot
Largest selection of common and unique PVC pipe fittings
Charlotte Pipe 3/4-in Schedule 40 PVC Coupling (10-Pack) in the PVC Pipe & Fittings department at Lowes.com
PVC Schedule 40, Clear, Coupling, Socket x Socket, 1/4 in. to 8 in. Si
Amazon.com: Midline Valve PVC Union Coupling Pipe Fitting 3'' Solvent Connections White Plastic (597DV300) : Industrial & Scientific
Charlotte Pipe 3/4 in. PVC Schedule 40 S x S Coupling PVC021000800HD - The Home Depot
Fernco 1056-215 Reducing 2 in. x 1-1/2 in. Flexible PVC Pipe Coupling for Cast Iron and Plastic Plumbing Connections in Blue - GreyDock.com
Plastic Pipe Coupling, PVC, 1/2 inch x 1/2 inch, Female NPT Thread x Female
Pipe Fittings - PVC Slip Couplings 1-1/2"
Water Source 2 in. Plastic Inside Flush Coupling WSFC200 - The Home Depot
20 Pack 1/2" PVC Pipe Coupling Adapter Pipe Fitting Connector (Socket x Socket), Furniture Build Grade SCH40 1/2 Inch PVC Pipe Slip Socket Connectors for Home or Industrial Use, White - Amazon.com