3/8 To 1/4 1/2 Inch Drive Ratchet Converter Socket Adapter Reducer Air Impact | eBay
Port Adapter - 1/4 x 3/8 Female Flare x Flare Adapter w/ Copper Gasket Brass - 105 - UR3-46 | HVACDirect.com
Brass Adapter, Male (1/4-18 NPT), Female (3/8-18 NPT) – AGS Company Automotive Solutions
1/4" NPT Male x 3/8" NPT Female Swivel Straight 1404-04-06 Adapter | NPT Female Swivel to NPT Male - Straight | NPT to NPT | Hydraulic Adapters & Fittings | Hydraulics | www.surpluscenter.com
Amazon.com : Camera Screw Adapter Thread 1/4" Male to 3/8" Female and 3/8" Male to 1/4" Female Adapter Set for Camera Monitor, Tripod, Mount : Electronics
Threading Adapter, NPT 3/8 Male to G 1/4 Female
LTWFITTING 1/4 in. O.D. Comp x 3/8 in. MIP Brass Compression Adapter Fitting (5-Pack) HF684605 - The Home Depot
Amazon.com : Standard 3/8"-16 Female to 1/4"-20 Male Tripod Thread Reducer Screw Adapter (Brass) Precision Made (2 Pack) : Electronics