These threaded bushing adapters have female pipe threads on one side and male pipe threads on the other. They are used to reduce down or size up threaded connections.
Drip Irrigation - Fittings - PVC - PVC Bushings and Adapters
Landscaping - Fittings - PVC - Page 1 - DripWorks
McCoy's Building Supply
Threaded Bushing (MPTxFPT) - DripWorks
Threaded Bushing (MPTxFPT) - DripWorks
GENERIC 1 MPT x 3/4 FPT Bronze Reducing Bushing
Reducing Bushings - Pond Supplies Canada
Southland 3/4 in. x 1/4 in. Brass Pressure MPT x FPT Hex Bushing
Landscaping - Fittings - PVC - Page 1 - DripWorks
Threaded Bushing (MPTxFPT) - DripWorks
Topring Reducing Bushing 1/2(M) x 3/8(F)NPT, cost each
1 1/2 x 3/4 Threaded Reducer Bushing, MPT x FPT, PVC Schedule 40
Threaded Bushing (MPTxFPT) - DripWorks