Midanya 1/4-Inch Female Pipe x 3/8-Inch Male Brass Pipe Fitting Reducer Adapter Air Hose Adapter Metal Pipe Adapter, 2 Pieces (1 Pair) - Amazon.com
Screw adapter 1/4" to 3/8"
K&M 1/4" to 3/8" Thread Adapter 21770.000.29 B&H Photo Video
Port Adapter - 1/4 x 3/8 Female Flare x Flare Adapter w/ Copper Gasket Brass - 105 - UR3-46 | HVACDirect.com
2 Pcs) Fotasy 3/8" Female to 1/4" Male 1/4 inch Thread Screw Tripod M – RainbowImaging
Amazon.com : Foto&Tech Metal 1/4 inch to 3/8 inch Tripod Thread Adapter, Easy Mount Convert Screw Adapter for Tripod Monopod Ballhead, Reducer Bushing for Camera Video Equipment DSLR SLR Mic Boom Stand (
3/8" - 1/4" Adapter | Kupo
Reporterstore.com - threaded adapter 3/8 inch to 1/4 inch
Husky 3/8 in. Female to 1/4 in. Male Drive Adapter HADPTR3814 - The Home Depot