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) :
LASCO 3/4-in Schedule 40 PVC Adapter in the PVC Pipe & Fittings department at Lowes.com
20 Pack 3/4" PVC Pipe Coupling Adapter Pipe Fittings (Socket x Socket) Contractor Pack Schedule 40 Heavy Duty 3/4 Inch PVC Slip Socket Connectors for DIY PVC Shelf Garden Support Structure, White - Amazon.com
Charlotte Pipe 1/2 in. x 3/4 in. PVC Schedule 40 MPT x S Male Reducer Adapter PVC021100500HD - The Home Depot
Charlotte Pipe 6 in. PVC DWV Socket Coupling PVC00100600HD - The Home Depot
PVC Male Adapter Pipe Fitting - SCH 40 PVC Fittings 3/4 Inch MNPT x 1 Inch Slip Socket PVC Connectors - PVC Pipe Connectors for Plumbing Water Line – Male Adapter Fitting - Amazon.com
1/2 in. Cross PVC Fitting (Box of 100) — FORMUFIT Direct