Proline Series 3/8-in x 1/4-in Barbed Splicer Adapter Fitting in the Brass Fittings department at Lowes.com
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
Amazon.com : Standard 3/8"-16 Female to 1/4"-20 Male Tripod Thread Reducer Screw Adapter (Brass) Precision Made (2 Pack) : Electronics
Special Adapter 3/8'' to 1/4'' thread - 088 | Manfrotto Global
BrassCraft 3/8-in x 1/4-in Compression Reducing Union Coupling Fitting in the Brass Fittings department at Lowes.com
3/8 Female x 1/4 Male Brass Adapter - Fastener Warehouse
Sioux Chief® 1/4" Female x 3/8" Compression Brass Adapter Without Insert at Menards®
Milwaukee 3/8 in. Square x 1/4 in. Hex Shockwave Impact Adapter 48-03-4405 - The Home Depot
Manfrotto 3/8" + 1/4" Adapter Spigot 147 B&H Photo Video
Husky 1/4 and 3/8 in. Drive Adapter Set (3-Piece) HADPTR3PC - The Home Depot
CRAFTSMAN 1/4-in to 3/8-in Socket Adapter in the Socket Adapters department at Lowes.com
Value Collection - 3/8 Female & 1/4 Male NPTF Steel Hydraulic Hose Adapter - 59755272 - MSC Industrial Supply