Orbit 1/2 in. x 3/4 in. MNPT Poly Adapter 37217 - The Home Depot
Amazon.com: 1/2” G Thread (BSP) Female to 3/4” GHT Male Connector, Brass BSP to Garden Hose Adapter, Industrial Metal Brass G Thread to Garden Hose Connect (3 Pack) : Patio, Lawn & Garden
1/2" Drive x 3/4" Drive Impact Socket Adapter - AP1624 | Mac Tools
Apollo 3/4 in. Brass PEX-B Barb x 1/2 in. Male Pipe Thread Reducing Adapter APXMA1234 - The Home Depot