Amazon.com: 1" (One-inch) Male to 1/2" (Half-inch) Female Socket Adapter : Tools & Home Improvement
Charlotte Pipe 1-1/2 in. x 1-1/4 in. PVC Schedule 40 MPT x S Reducer Male Adapter PVC 02110 1200HD - The Home Depot
Amazon.com: GESHATEN 1/2” G Thread (BSP) Female to 1/2” NPT Male Connector, Brass BSP to NPT Adapter 1/2 Inch, Industrial Metal Brass G Thread to Pipe Fittings Connect (2 Pack) : Industrial & Scientific
NIBCO 1-1/2 x 1-1/4 in. PVC DWV Trap Adapter Fitting C480127HD112114 - The Home Depot
1-1/2" NPT Pipe Female x 1-1/2" NPSH Male Adapter – FireHoseSupply.com
M20 to 1/2" NPT Thread Adapter: 316 Stainless Steel (ATEX)
2" x 1-1/2" Sch 80 PVC Male Adapter - Mipt x Soc 836-251
PROTO, 1/4 in_3/8 in_1/2 in Output Drive Size, Square, Socket Adapter Set - 19C375|JHA4S - Grainger
Parker - Industrial Pipe Adapter: 1/2" Female Thread, 3/4-16 Male Thread, Male Straight Thread O-Ring x Female NPTF - 09107921 - MSC Industrial Supply